Introduce RootWindowHostDelegate. The RootWindowHost performs most of its communication with RootWi…

ui/aura/gestures/gesture_recognizer_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/memory/scoped_vector.h"
 #include "base/string_number_conversions.h"
 #include "base/timer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/aura/event.h"
 #include "ui/aura/root_window.h"
@@ skipping 354 matching lines @@
   int x = x_start;
   int y = y_start;
   base::TimeDelta time = time_start;
 
   for (int i = 0; i < num_steps; i++) {
     x += dx;
     y += dy;
     time = time + base::TimeDelta::FromMilliseconds(time_step);
     TouchEvent move(ui::ET_TOUCH_MOVED, gfx::Point(x, y),
                     touch_id, time);
-    root_window->DispatchTouchEvent(&move);
+    root_window->AsRootWindowHostDelegate()->OnHostTouchEvent(&move);
   }
 }
 
 void SendScrollEvent(RootWindow* root_window,
                      int x,
                      int y,
                      int touch_id,
                      GestureEventConsumeDelegate* delegate) {
   delegate->Reset();
   TouchEvent move(ui::ET_TOUCH_MOVED, gfx::Point(x, y),
                   touch_id, GetTime());
-  root_window->DispatchTouchEvent(&move);
+  root_window->AsRootWindowHostDelegate()->OnHostTouchEvent(&move);
 }
 
 }  // namespace
 
 typedef AuraTestBase GestureRecognizerTest;
 
 // Check that appropriate touch events generate tap gesture events.
 TEST_F(GestureRecognizerTest, GestureEventTap) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId = 2;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_TRUE(delegate->begin());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->long_press());
 
   // Make sure there is enough delay before the touch is released so that it is
   // recognized as a tap.
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
 
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_TRUE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->begin());
   EXPECT_TRUE(delegate->end());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
 }
 
 // Check that appropriate touch events generate tap gesture events
 // when information about the touch radii are provided.
 TEST_F(GestureRecognizerTest, GestureEventTapRegion) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 800;
   const int kWindowHeight = 600;
   const int kTouchId = 2;
   gfx::Rect bounds(0, 0, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   // Test with no ET_TOUCH_MOVED events.
   {
      delegate->Reset();
      TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                       kTouchId, GetTime());
      press.set_radius_x(5);
      press.set_radius_y(12);
-     root_window()->DispatchTouchEvent(&press);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
      EXPECT_FALSE(delegate->tap());
      EXPECT_TRUE(delegate->tap_down());
      EXPECT_TRUE(delegate->begin());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
      EXPECT_FALSE(delegate->long_press());
 
      // Make sure there is enough delay before the touch is released so that it
      // is recognized as a tap.
      delegate->Reset();
      TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                         kTouchId, press.time_stamp() +
                         base::TimeDelta::FromMilliseconds(50));
      release.set_radius_x(5);
      release.set_radius_y(12);
 
-     root_window()->DispatchTouchEvent(&release);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
      EXPECT_TRUE(delegate->tap());
      EXPECT_FALSE(delegate->tap_down());
      EXPECT_FALSE(delegate->begin());
      EXPECT_TRUE(delegate->end());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
 
      gfx::Point actual_point(delegate->tap_location());
      EXPECT_EQ(24, delegate->bounding_box().width());
      EXPECT_EQ(24, delegate->bounding_box().height());
      EXPECT_EQ(100, actual_point.x());
      EXPECT_EQ(200, actual_point.y());
   }
 
   // Test with no ET_TOUCH_MOVED events but different touch points and radii.
   {
      delegate->Reset();
      TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(365, 290),
                       kTouchId, GetTime());
      press.set_radius_x(8);
      press.set_radius_y(14);
-     root_window()->DispatchTouchEvent(&press);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
      EXPECT_FALSE(delegate->tap());
      EXPECT_TRUE(delegate->tap_down());
      EXPECT_TRUE(delegate->begin());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
      EXPECT_FALSE(delegate->long_press());
 
      delegate->Reset();
      TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(377, 291),
                         kTouchId, press.time_stamp() +
                         base::TimeDelta::FromMilliseconds(50));
      release.set_radius_x(20);
      release.set_radius_y(13);
 
-     root_window()->DispatchTouchEvent(&release);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
      EXPECT_TRUE(delegate->tap());
      EXPECT_FALSE(delegate->tap_down());
      EXPECT_FALSE(delegate->begin());
      EXPECT_TRUE(delegate->end());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
 
      gfx::Point actual_point(delegate->tap_location());
      EXPECT_EQ(46, delegate->bounding_box().width());
      EXPECT_EQ(40, delegate->bounding_box().height());
      EXPECT_EQ(373, actual_point.x());
      EXPECT_EQ(290, actual_point.y());
   }
 
   // Test with a single ET_TOUCH_MOVED event.
   {
      delegate->Reset();
      TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(46, 205),
                       kTouchId, GetTime());
      press.set_radius_x(6);
      press.set_radius_y(10);
-     root_window()->DispatchTouchEvent(&press);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
      EXPECT_FALSE(delegate->tap());
      EXPECT_TRUE(delegate->tap_down());
      EXPECT_TRUE(delegate->begin());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
      EXPECT_FALSE(delegate->long_press());
 
      delegate->Reset();
      TouchEvent move(ui::ET_TOUCH_MOVED, gfx::Point(52, 200),
                      kTouchId, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
      move.set_radius_x(8);
      move.set_radius_y(12);
-     root_window()->DispatchTouchEvent(&move);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move);
      EXPECT_FALSE(delegate->tap());
      EXPECT_FALSE(delegate->tap_down());
      EXPECT_FALSE(delegate->begin());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
      EXPECT_FALSE(delegate->long_press());
 
      delegate->Reset();
      TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(50, 195),
                         kTouchId, press.time_stamp() +
                         base::TimeDelta::FromMilliseconds(50));
      release.set_radius_x(4);
      release.set_radius_y(8);
 
-     root_window()->DispatchTouchEvent(&release);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
      EXPECT_TRUE(delegate->tap());
      EXPECT_FALSE(delegate->tap_down());
      EXPECT_FALSE(delegate->begin());
      EXPECT_TRUE(delegate->end());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
 
      gfx::Point actual_point(delegate->tap_location());
      EXPECT_EQ(28, delegate->bounding_box().width());
      EXPECT_EQ(28, delegate->bounding_box().height());
      EXPECT_EQ(49, actual_point.x());
      EXPECT_EQ(200, actual_point.y());
   }
 
   // Test with a few ET_TOUCH_MOVED events.
   {
      delegate->Reset();
      TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(400, 150),
                       kTouchId, GetTime());
      press.set_radius_x(7);
      press.set_radius_y(10);
-     root_window()->DispatchTouchEvent(&press);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
      EXPECT_FALSE(delegate->tap());
      EXPECT_TRUE(delegate->tap_down());
      EXPECT_TRUE(delegate->begin());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
      EXPECT_FALSE(delegate->long_press());
 
      delegate->Reset();
      TouchEvent move(ui::ET_TOUCH_MOVED, gfx::Point(397, 155),
                      kTouchId, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
      move.set_radius_x(13);
      move.set_radius_y(12);
-     root_window()->DispatchTouchEvent(&move);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move);
      EXPECT_FALSE(delegate->tap());
      EXPECT_FALSE(delegate->tap_down());
      EXPECT_FALSE(delegate->begin());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
      EXPECT_FALSE(delegate->long_press());
 
      delegate->Reset();
      TouchEvent move1(ui::ET_TOUCH_MOVED, gfx::Point(395, 148),
                       kTouchId, move.time_stamp() +
                       base::TimeDelta::FromMilliseconds(50));
      move1.set_radius_x(16);
      move1.set_radius_y(16);
-     root_window()->DispatchTouchEvent(&move1);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move1);
      EXPECT_FALSE(delegate->tap());
      EXPECT_FALSE(delegate->tap_down());
      EXPECT_FALSE(delegate->begin());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
      EXPECT_FALSE(delegate->long_press());
 
      delegate->Reset();
      TouchEvent move2(ui::ET_TOUCH_MOVED, gfx::Point(400, 150),
                       kTouchId, move1.time_stamp() +
                       base::TimeDelta::FromMilliseconds(50));
      move2.set_radius_x(14);
      move2.set_radius_y(10);
-     root_window()->DispatchTouchEvent(&move2);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move2);
      EXPECT_FALSE(delegate->tap());
      EXPECT_FALSE(delegate->tap_down());
      EXPECT_FALSE(delegate->begin());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
      EXPECT_FALSE(delegate->long_press());
 
      delegate->Reset();
      TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(401, 149),
                         kTouchId, press.time_stamp() +
                         base::TimeDelta::FromMilliseconds(50));
      release.set_radius_x(8);
      release.set_radius_y(9);
 
-     root_window()->DispatchTouchEvent(&release);
+     root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
      EXPECT_TRUE(delegate->tap());
      EXPECT_FALSE(delegate->tap_down());
      EXPECT_FALSE(delegate->begin());
      EXPECT_TRUE(delegate->end());
      EXPECT_FALSE(delegate->double_tap());
      EXPECT_FALSE(delegate->scroll_begin());
      EXPECT_FALSE(delegate->scroll_update());
      EXPECT_FALSE(delegate->scroll_end());
 
      gfx::Point actual_point(delegate->tap_location());
@@ skipping 11 matching lines @@
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId = 5;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_TRUE(delegate->begin());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
 
   // Move the touch-point enough so that it is considered as a scroll. This
   // should generate both SCROLL_BEGIN and SCROLL_UPDATE gestures.
@@ skipping 39 matching lines @@
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_EQ(30, delegate->scroll_x());
   EXPECT_EQ(4, delegate->scroll_y());
   EXPECT_TRUE(delegate->bounding_box().IsEmpty());
 
   // Release the touch. This should end the scroll.
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->begin());
   EXPECT_TRUE(delegate->end());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_TRUE(delegate->scroll_end());
   EXPECT_TRUE(delegate->bounding_box().IsEmpty());
 }
 
 // Check that the bounding box during a scroll event is correct.
 TEST_F(GestureRecognizerTest, GestureEventScrollBoundingBox) {
   for (int radius = 1; radius <= 10; ++radius) {
     ui::GestureConfiguration::set_default_radius(radius);
     scoped_ptr<GestureEventConsumeDelegate> delegate(
         new GestureEventConsumeDelegate());
     const int kWindowWidth = 123;
     const int kWindowHeight = 45;
     const int kTouchId = 5;
     gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
     scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
         delegate.get(), -1234, bounds, NULL));
 
     const int kPositionX = 101;
     const int kPositionY = 201;
     delegate->Reset();
     TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(kPositionX, kPositionY),
                      kTouchId, GetTime());
-    root_window()->DispatchTouchEvent(&press);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
     EXPECT_EQ(gfx::Rect(kPositionX - radius,
                         kPositionY - radius,
                         radius * 2,
                         radius * 2).ToString(),
               delegate->bounding_box().ToString());
 
     const int kScrollAmount = 50;
     SendScrollEvents(root_window(), kPositionX, kPositionY, GetTime(),
         1, 1, kTouchId, 1, kScrollAmount, delegate.get());
     EXPECT_EQ(gfx::Point(1, 1).ToString(),
               delegate->scroll_begin_position().ToString());
     EXPECT_EQ(gfx::Rect(kPositionX + kScrollAmount - radius,
                         kPositionY + kScrollAmount - radius,
                         radius * 2,
                         radius * 2).ToString(),
               delegate->bounding_box().ToString());
 
     // Release the touch. This should end the scroll.
     delegate->Reset();
     TouchEvent release(ui::ET_TOUCH_RELEASED,
                        gfx::Point(kPositionX, kPositionY),
                        kTouchId, press.time_stamp() +
                        base::TimeDelta::FromMilliseconds(50));
-    root_window()->DispatchTouchEvent(&release);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
     EXPECT_EQ(gfx::Rect(kPositionX - radius,
                         kPositionY - radius,
                         radius * 2,
                         radius * 2).ToString(),
               delegate->bounding_box().ToString());
   }
   ui::GestureConfiguration::set_default_radius(0);
 }
 
 // Check Scroll End Events report correct velocities
 // if the user was on a horizontal rail
 TEST_F(GestureRecognizerTest, GestureEventHorizontalRailFling) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kTouchId = 7;
   gfx::Rect bounds(0, 0, 1000, 1000);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(0, 0),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
 
   // Move the touch-point horizontally enough that it is considered a
   // horizontal scroll.
   SendScrollEvent(root_window(), 20, 1, kTouchId, delegate.get());
   EXPECT_EQ(0, delegate->scroll_y());
   EXPECT_EQ(20, delegate->scroll_x());
 
   // Get a high x velocity, while still staying on the rail
   SendScrollEvents(root_window(), 1, 1, press.time_stamp(),
                    100, 10, kTouchId, 1,
                    ui::GestureConfiguration::points_buffered_for_velocity(),
                    delegate.get());
 
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
 
   EXPECT_TRUE(delegate->scroll_end());
   EXPECT_EQ(0, delegate->velocity_x());
   EXPECT_EQ(0, delegate->velocity_y());
 }
 
 // Check Scroll End Events report correct velocities
 // if the user was on a vertical rail
 TEST_F(GestureRecognizerTest, GestureEventVerticalRailFling) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kTouchId = 7;
   gfx::Rect bounds(0, 0, 1000, 1000);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(0, 0),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
 
   // Move the touch-point vertically enough that it is considered a
   // vertical scroll.
   SendScrollEvent(root_window(), 1, 20, kTouchId, delegate.get());
   EXPECT_EQ(20, delegate->scroll_y());
   EXPECT_EQ(0, delegate->scroll_x());
 
   // Get a high y velocity, while still staying on the rail
   SendScrollEvents(root_window(), 1, 1, press.time_stamp(),
                    10, 100, kTouchId, 1,
                    ui::GestureConfiguration::points_buffered_for_velocity(),
                    delegate.get());
 
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
 
   EXPECT_TRUE(delegate->scroll_end());
   EXPECT_EQ(0, delegate->velocity_x());
   EXPECT_EQ(0, delegate->velocity_y());
 }
 
 // Check Scroll End Events reports zero velocities
 // if the user is not on a rail
 TEST_F(GestureRecognizerTest, GestureEventNonRailFling) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kTouchId = 7;
   gfx::Rect bounds(0, 0, 1000, 1000);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(0, 0),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
 
   // Move the touch-point such that a non-rail scroll begins
   SendScrollEvent(root_window(), 20, 20, kTouchId, delegate.get());
   EXPECT_EQ(20, delegate->scroll_y());
   EXPECT_EQ(20, delegate->scroll_x());
 
   SendScrollEvents(root_window(), 1, 1, press.time_stamp(),
                    10, 100, kTouchId, 1,
                    ui::GestureConfiguration::points_buffered_for_velocity(),
                    delegate.get());
 
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
 
   EXPECT_TRUE(delegate->scroll_end());
   EXPECT_EQ(0, delegate->velocity_x());
   EXPECT_EQ(0, delegate->velocity_y());
 }
 
 // Check that appropriate touch events generate long press events
 TEST_F(GestureRecognizerTest, GestureEventLongPress) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId = 2;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   delegate->Reset();
 
   TimerTestGestureRecognizer* gesture_recognizer =
       new TimerTestGestureRecognizer(root_window());
   TimerTestGestureSequence* gesture_sequence =
       static_cast<TimerTestGestureSequence*>(
           gesture_recognizer->GetGestureSequenceForTesting(window.get()));
 
   root_window()->SetGestureRecognizerForTesting(gesture_recognizer);
 
   TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                     kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_TRUE(delegate->begin());
 
   // We haven't pressed long enough for a long press to occur
   EXPECT_FALSE(delegate->long_press());
 
   // Wait until the timer runs out
   gesture_sequence->ForceTimeout();
   EXPECT_TRUE(delegate->long_press());
   EXPECT_EQ(0, delegate->touch_id());
 
   delegate->Reset();
   TouchEvent release1(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                       kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&release1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release1);
   EXPECT_FALSE(delegate->long_press());
 }
 
 // Check that scrolling cancels a long press
 TEST_F(GestureRecognizerTest, GestureEventLongPressCancelledByScroll) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId = 6;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   delegate->Reset();
 
   TimerTestGestureRecognizer* gesture_recognizer =
       new TimerTestGestureRecognizer(root_window());
   TimerTestGestureSequence* gesture_sequence =
       static_cast<TimerTestGestureSequence*>(
           gesture_recognizer->GetGestureSequenceForTesting(window.get()));
 
   root_window()->SetGestureRecognizerForTesting(gesture_recognizer);
 
   TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                     kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
   EXPECT_TRUE(delegate->tap_down());
 
   // We haven't pressed long enough for a long press to occur
   EXPECT_FALSE(delegate->long_press());
 
   // Scroll around, to cancel the long press
   SendScrollEvent(root_window(), 130, 230, kTouchId, delegate.get());
   // Wait until the timer runs out
   gesture_sequence->ForceTimeout();
   EXPECT_FALSE(delegate->long_press());
 
   delegate->Reset();
   TouchEvent release1(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                       kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&release1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release1);
   EXPECT_FALSE(delegate->long_press());
 }
 
 // Check that second tap cancels a long press
 TEST_F(GestureRecognizerTest, GestureEventLongPressCancelledBySecondTap) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 300;
   const int kWindowHeight = 400;
   const int kTouchId1 = 8;
   const int kTouchId2 = 2;
   gfx::Rect bounds(5, 5, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   TimerTestGestureRecognizer* gesture_recognizer =
       new TimerTestGestureRecognizer(root_window());
   TimerTestGestureSequence* gesture_sequence =
       static_cast<TimerTestGestureSequence*>(
           gesture_recognizer->GetGestureSequenceForTesting(window.get()));
 
   root_window()->SetGestureRecognizerForTesting(gesture_recognizer);
 
   delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                    kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_TRUE(delegate->begin());
 
   // We haven't pressed long enough for a long press to occur
   EXPECT_FALSE(delegate->long_press());
 
   // Second tap, to cancel the long press
   delegate->Reset();
   TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(10, 10),
                     kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&press2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
   EXPECT_FALSE(delegate->tap_down());  // no touch down for second tap.
   EXPECT_TRUE(delegate->begin());
 
   // Wait until the timer runs out
   gesture_sequence->ForceTimeout();
 
   // No long press occurred
   EXPECT_FALSE(delegate->long_press());
 
   delegate->Reset();
   TouchEvent release1(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                       kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&release1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release1);
   EXPECT_FALSE(delegate->long_press());
   EXPECT_TRUE(delegate->two_finger_tap());
 }
 
 // Check that horizontal scroll gestures cause scrolls on horizontal rails.
 // Also tests that horizontal rails can be broken.
 TEST_F(GestureRecognizerTest, GestureEventHorizontalRailScroll) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kTouchId = 7;
   gfx::Rect bounds(0, 0, 1000, 1000);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(0, 0),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
 
   // Move the touch-point horizontally enough that it is considered a
   // horizontal scroll.
   SendScrollEvent(root_window(), 20, 1, kTouchId, delegate.get());
   EXPECT_EQ(0, delegate->scroll_y());
   EXPECT_EQ(20, delegate->scroll_x());
 
   SendScrollEvent(root_window(), 25, 6, kTouchId, delegate.get());
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_EQ(5, delegate->scroll_x());
@@ skipping 21 matching lines @@
 TEST_F(GestureRecognizerTest, GestureEventVerticalRailScroll) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kTouchId = 7;
   gfx::Rect bounds(0, 0, 1000, 1000);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(0, 0),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
 
   // Move the touch-point vertically enough that it is considered a
   // vertical scroll.
   SendScrollEvent(root_window(), 1, 20, kTouchId, delegate.get());
   EXPECT_EQ(0, delegate->scroll_x());
   EXPECT_EQ(20, delegate->scroll_y());
 
   SendScrollEvent(root_window(), 6, 25, kTouchId, delegate.get());
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_EQ(5, delegate->scroll_y());
@@ skipping 23 matching lines @@
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId = 3;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
 
   // Make sure there is enough delay before the touch is released so that it is
   // recognized as a tap.
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_TRUE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
 
   // Now, do a scroll gesture. Delay it sufficiently so that it doesn't trigger
   // a double-tap.
   delegate->Reset();
   TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                     kTouchId, release.time_stamp() +
                     base::TimeDelta::FromMilliseconds(1000));
-  root_window()->DispatchTouchEvent(&press1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
 
   // Move the touch-point enough so that it is considered as a scroll. This
   // should generate both SCROLL_BEGIN and SCROLL_UPDATE gestures.
   // The first movement is diagonal, to ensure that we have a free scroll,
   // and not a rail scroll.
   delegate->Reset();
   TouchEvent move(ui::ET_TOUCH_MOVED, gfx::Point(130, 230),
                   kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&move);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_TRUE(delegate->scroll_begin());
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_EQ(29, delegate->scroll_x());
   EXPECT_EQ(29, delegate->scroll_y());
 
   // Move some more to generate a few more scroll updates.
   delegate->Reset();
   TouchEvent move1(ui::ET_TOUCH_MOVED, gfx::Point(110, 211),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&move1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move1);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_EQ(-20, delegate->scroll_x());
   EXPECT_EQ(-19, delegate->scroll_y());
 
   delegate->Reset();
   TouchEvent move2(ui::ET_TOUCH_MOVED, gfx::Point(140, 215),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&move2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move2);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_EQ(30, delegate->scroll_x());
   EXPECT_EQ(4, delegate->scroll_y());
 
   // Release the touch. This should end the scroll.
   delegate->Reset();
   TouchEvent release1(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                       kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&release1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release1);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_TRUE(delegate->scroll_end());
 }
 
 TEST_F(GestureRecognizerTest, AsynchronousGestureRecognition) {
   scoped_ptr<QueueTouchEventDelegate> queued_delegate(
       new QueueTouchEventDelegate(root_window()));
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId1 = 6;
   const int kTouchId2 = 4;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> queue(CreateTestWindowWithDelegate(
       queued_delegate.get(), -1234, bounds, NULL));
 
   queued_delegate->set_window(queue.get());
 
   // Touch down on the window. This should not generate any gesture event.
   queued_delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                    kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   EXPECT_FALSE(queued_delegate->tap());
   EXPECT_FALSE(queued_delegate->tap_down());
   EXPECT_FALSE(queued_delegate->begin());
   EXPECT_FALSE(queued_delegate->double_tap());
   EXPECT_FALSE(queued_delegate->scroll_begin());
   EXPECT_FALSE(queued_delegate->scroll_update());
   EXPECT_FALSE(queued_delegate->scroll_end());
 
   // Introduce some delay before the touch is released so that it is recognized
   // as a tap. However, this still should not create any gesture events.
   queued_delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId1, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_FALSE(queued_delegate->tap());
   EXPECT_FALSE(queued_delegate->tap_down());
   EXPECT_FALSE(queued_delegate->begin());
   EXPECT_FALSE(queued_delegate->end());
   EXPECT_FALSE(queued_delegate->double_tap());
   EXPECT_FALSE(queued_delegate->scroll_begin());
   EXPECT_FALSE(queued_delegate->scroll_update());
   EXPECT_FALSE(queued_delegate->scroll_end());
 
   // Create another window, and place a touch-down on it. This should create a
   // tap-down gesture.
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -2345, gfx::Rect(0, 0, 50, 50), NULL));
   delegate->Reset();
   TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(10, 20),
                     kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&press2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_FALSE(queued_delegate->begin());
   EXPECT_FALSE(queued_delegate->end());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
 
   TouchEvent release2(ui::ET_TOUCH_RELEASED, gfx::Point(10, 20),
                       kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&release2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release2);
 
   // Process the first queued event.
   queued_delegate->Reset();
   queued_delegate->ReceivedAck();
   EXPECT_FALSE(queued_delegate->tap());
   EXPECT_TRUE(queued_delegate->tap_down());
   EXPECT_TRUE(queued_delegate->begin());
   EXPECT_FALSE(queued_delegate->end());
   EXPECT_FALSE(queued_delegate->double_tap());
   EXPECT_FALSE(queued_delegate->scroll_begin());
@@ skipping 10 matching lines @@
   EXPECT_FALSE(queued_delegate->double_tap());
   EXPECT_FALSE(queued_delegate->scroll_begin());
   EXPECT_FALSE(queued_delegate->scroll_update());
   EXPECT_FALSE(queued_delegate->scroll_end());
 
   // Start all over. Press on the first window, then press again on the second
   // window. The second press should still go to the first window.
   queued_delegate->Reset();
   TouchEvent press3(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                     kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&press3);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press3);
   EXPECT_FALSE(queued_delegate->tap());
   EXPECT_FALSE(queued_delegate->tap_down());
   EXPECT_FALSE(queued_delegate->begin());
   EXPECT_FALSE(queued_delegate->end());
   EXPECT_FALSE(queued_delegate->begin());
   EXPECT_FALSE(queued_delegate->end());
   EXPECT_FALSE(queued_delegate->double_tap());
   EXPECT_FALSE(queued_delegate->scroll_begin());
   EXPECT_FALSE(queued_delegate->scroll_update());
   EXPECT_FALSE(queued_delegate->scroll_end());
 
   queued_delegate->Reset();
   delegate->Reset();
   TouchEvent press4(ui::ET_TOUCH_PRESSED, gfx::Point(103, 203),
                     kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&press4);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press4);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->begin());
   EXPECT_FALSE(delegate->end());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(queued_delegate->tap());
   EXPECT_FALSE(queued_delegate->tap_down());
   EXPECT_FALSE(queued_delegate->begin());
   EXPECT_FALSE(queued_delegate->end());
   EXPECT_FALSE(queued_delegate->double_tap());
   EXPECT_FALSE(queued_delegate->scroll_begin());
   EXPECT_FALSE(queued_delegate->scroll_update());
   EXPECT_FALSE(queued_delegate->scroll_end());
 
   // Move the second touch-point enough so that it is considered a pinch. This
   // should generate both SCROLL_BEGIN and PINCH_BEGIN gestures.
   queued_delegate->Reset();
   delegate->Reset();
   int x_move = ui::GestureConfiguration::max_touch_move_in_pixels_for_click();
   TouchEvent move(ui::ET_TOUCH_MOVED, gfx::Point(103 + x_move, 203),
                   kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&move);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->begin());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(queued_delegate->tap());
   EXPECT_FALSE(queued_delegate->tap_down());
   EXPECT_FALSE(queued_delegate->begin());
@@ skipping 52 matching lines @@
   const int kTouchId2 = 3;
   gfx::Rect bounds(5, 5, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   aura::RootWindow* root = root_window();
 
   delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                    kTouchId1, GetTime());
-  root->DispatchTouchEvent(&press);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
 
   // Move the touch-point enough so that it is considered as a scroll. This
   // should generate both SCROLL_BEGIN and SCROLL_UPDATE gestures.
   delegate->Reset();
   TouchEvent move(ui::ET_TOUCH_MOVED, gfx::Point(130, 301),
                   kTouchId1, GetTime());
-  root->DispatchTouchEvent(&move);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&move);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_TRUE(delegate->scroll_begin());
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
 
   // Press the second finger. It should cause pinch-begin. Note that we will not
   // transition to two finger tap here because the touch points are far enough.
   delegate->Reset();
   TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(10, 10),
                     kTouchId2, GetTime());
-  root->DispatchTouchEvent(&press2);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());  // no touch down for second tap.
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_TRUE(delegate->pinch_begin());
   EXPECT_EQ(gfx::Rect(10, 10, 120, 291).ToString(),
             delegate->bounding_box().ToString());
 
   // Move the first finger.
   delegate->Reset();
   TouchEvent move3(ui::ET_TOUCH_MOVED, gfx::Point(95, 201),
                    kTouchId1, GetTime());
-  root->DispatchTouchEvent(&move3);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&move3);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->pinch_begin());
   EXPECT_TRUE(delegate->pinch_update());
   EXPECT_EQ(gfx::Rect(10, 10, 85, 191).ToString(),
             delegate->bounding_box().ToString());
 
   // Now move the second finger.
   delegate->Reset();
   TouchEvent move4(ui::ET_TOUCH_MOVED, gfx::Point(55, 15),
                    kTouchId2, GetTime());
-  root->DispatchTouchEvent(&move4);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&move4);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->pinch_begin());
   EXPECT_TRUE(delegate->pinch_update());
   EXPECT_EQ(gfx::Rect(55, 15, 40, 186).ToString(),
             delegate->bounding_box().ToString());
 
   // Release the first finger. This should end pinch.
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId1, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
-  root->DispatchTouchEvent(&release);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_TRUE(delegate->pinch_end());
   EXPECT_EQ(gfx::Rect(55, 15, 46, 186).ToString(),
             delegate->bounding_box().ToString());
 
   // Move the second finger. This should still generate a scroll.
   delegate->Reset();
   TouchEvent move5(ui::ET_TOUCH_MOVED, gfx::Point(25, 10),
                    kTouchId2, GetTime());
-  root->DispatchTouchEvent(&move5);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&move5);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->pinch_begin());
   EXPECT_FALSE(delegate->pinch_update());
   EXPECT_TRUE(delegate->bounding_box().IsEmpty());
 }
 
 TEST_F(GestureRecognizerTest, GestureEventPinchFromScrollFromPinch) {
 scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 300;
   const int kWindowHeight = 400;
   const int kTouchId1 = 5;
   const int kTouchId2 = 3;
   gfx::Rect bounds(5, 5, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 301),
                    kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   delegate->Reset();
   TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(10, 10),
                     kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&press2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
   // Since the touch points are far enough we will go to pinch rather than two
   // finger tap.
   EXPECT_TRUE(delegate->pinch_begin());
 
   SendScrollEvent(root_window(), 130, 230, kTouchId1, delegate.get());
   EXPECT_TRUE(delegate->pinch_update());
 
   // Pinch has started, now release the second finger
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_TRUE(delegate->pinch_end());
 
   SendScrollEvent(root_window(), 130, 230, kTouchId2, delegate.get());
   EXPECT_TRUE(delegate->scroll_update());
 
   // Pinch again
   delegate->Reset();
   TouchEvent press3(ui::ET_TOUCH_PRESSED, gfx::Point(10, 10),
                     kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&press3);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press3);
   // Now the touch points are close. So we will go into two finger tap.
   // Move the touch-point enough to break two-finger-tap and enter pinch.
   TouchEvent move2(ui::ET_TOUCH_MOVED, gfx::Point(101, 202),
                    kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&move2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move2);
   EXPECT_TRUE(delegate->pinch_begin());
 
   SendScrollEvent(root_window(), 130, 230, kTouchId1, delegate.get());
   EXPECT_TRUE(delegate->pinch_update());
 }
 
 TEST_F(GestureRecognizerTest, GestureEventPinchFromTap) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 300;
   const int kWindowHeight = 400;
   const int kTouchId1 = 3;
   const int kTouchId2 = 5;
   gfx::Rect bounds(5, 5, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   aura::RootWindow* root = root_window();
 
   delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 301),
                    kTouchId1, GetTime());
-  root->DispatchTouchEvent(&press);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_TRUE(delegate->bounding_box().IsEmpty());
 
   // Press the second finger far enough to break two finger tap. It should
   // instead cause a scroll-begin and pinch-begin.
   delegate->Reset();
   TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(10, 10),
                     kTouchId2, GetTime());
-  root->DispatchTouchEvent(&press2);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());  // no touch down for second tap.
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_TRUE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_TRUE(delegate->pinch_begin());
   EXPECT_EQ(gfx::Rect(10, 10, 91, 291).ToString(),
             delegate->bounding_box().ToString());
 
   // Move the first finger.
   delegate->Reset();
   TouchEvent move3(ui::ET_TOUCH_MOVED, gfx::Point(65, 201),
                    kTouchId1, GetTime());
-  root->DispatchTouchEvent(&move3);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&move3);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->pinch_begin());
   EXPECT_TRUE(delegate->pinch_update());
   EXPECT_EQ(gfx::Rect(10, 10, 55, 191).ToString(),
             delegate->bounding_box().ToString());
 
   // Now move the second finger.
   delegate->Reset();
   TouchEvent move4(ui::ET_TOUCH_MOVED, gfx::Point(55, 15),
                    kTouchId2, GetTime());
-  root->DispatchTouchEvent(&move4);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&move4);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->pinch_begin());
   EXPECT_TRUE(delegate->pinch_update());
   EXPECT_EQ(gfx::Rect(55, 15, 10, 186).ToString(),
             delegate->bounding_box().ToString());
 
   // Release the first finger. This should end pinch.
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId1, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
-  root->DispatchTouchEvent(&release);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_TRUE(delegate->pinch_end());
   EXPECT_EQ(gfx::Rect(55, 15, 46, 186).ToString(),
             delegate->bounding_box().ToString());
 
   // Move the second finger. This should still generate a scroll.
   delegate->Reset();
   TouchEvent move5(ui::ET_TOUCH_MOVED, gfx::Point(25, 10),
                    kTouchId2, GetTime());
-  root->DispatchTouchEvent(&move5);
+  root->AsRootWindowHostDelegate()->OnHostTouchEvent(&move5);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->pinch_begin());
   EXPECT_FALSE(delegate->pinch_update());
   EXPECT_TRUE(delegate->bounding_box().IsEmpty());
 }
 
 TEST_F(GestureRecognizerTest, GestureEventIgnoresDisconnectedEvents) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
 
   TouchEvent release1(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                       6, GetTime());
-  root_window()->DispatchTouchEvent(&release1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release1);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
 }
 
 // Check that a touch is locked to the window of the closest current touch
 // within max_separation_for_gesture_touches_in_pixels
 TEST_F(GestureRecognizerTest, GestureEventTouchLockSelectsCorrectWindow) {
   ui::GestureRecognizer* gesture_recognizer =
       new ui::GestureRecognizerImpl(root_window());
   root_window()->SetGestureRecognizerForTesting(gesture_recognizer);
@@ skipping 17 matching lines @@
 
   // Instantiate windows with |window_bounds| and touch each window at
   // its origin.
   for (int i = 0; i < kNumWindows; ++i) {
     delegates[i] = new GestureEventConsumeDelegate();
     windows[i] = CreateTestWindowWithDelegate(
         delegates[i], i, *window_bounds[i], NULL);
     windows[i]->set_id(i);
     TouchEvent press(ui::ET_TOUCH_PRESSED, window_bounds[i]->origin(),
                      i, GetTime());
-    root_window()->DispatchTouchEvent(&press);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   }
 
   // Touches should now be associated with the closest touch within
   // ui::GestureConfiguration::max_separation_for_gesture_touches_in_pixels
   target = gesture_recognizer->GetTargetForLocation(gfx::Point(11, 11));
   EXPECT_EQ("0", WindowIDAsString(target));
   target = gesture_recognizer->GetTargetForLocation(gfx::Point(511, 11));
   EXPECT_EQ("1", WindowIDAsString(target));
   target = gesture_recognizer->GetTargetForLocation(gfx::Point(11, 511));
   EXPECT_EQ("2", WindowIDAsString(target));
   target = gesture_recognizer->GetTargetForLocation(gfx::Point(511, 511));
   EXPECT_EQ("3", WindowIDAsString(target));
 
   // Add a touch in the middle associated with windows[2]
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(0, 500),
                    kNumWindows, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   TouchEvent move(ui::ET_TOUCH_MOVED, gfx::Point(250, 250),
                   kNumWindows, GetTime());
-  root_window()->DispatchTouchEvent(&move);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move);
 
   target = gesture_recognizer->GetTargetForLocation(gfx::Point(250, 250));
   EXPECT_EQ("2", WindowIDAsString(target));
 
   // Make sure that ties are broken by distance to a current touch
   // Closer to the point in the bottom right.
   target = gesture_recognizer->GetTargetForLocation(gfx::Point(380, 380));
   EXPECT_EQ("3", WindowIDAsString(target));
 
   // This touch is closer to the point in the middle
   target = gesture_recognizer->GetTargetForLocation(gfx::Point(300, 300));
   EXPECT_EQ("2", WindowIDAsString(target));
 
   // A touch too far from other touches won't be locked to anything
   target = gesture_recognizer->GetTargetForLocation(gfx::Point(1000, 1000));
   EXPECT_TRUE(target == NULL);
 
   // Move a touch associated with windows[2] to 1000, 1000
   TouchEvent move2(ui::ET_TOUCH_MOVED, gfx::Point(1000, 1000),
                    kNumWindows, GetTime());
-  root_window()->DispatchTouchEvent(&move2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move2);
 
   target = gesture_recognizer->GetTargetForLocation(gfx::Point(1000, 1000));
   EXPECT_EQ("2", WindowIDAsString(target));
 }
 
 // Check that touch events outside the root window are still handled
 // by the root window's gesture sequence.
 TEST_F(GestureRecognizerTest, GestureEventOutsideRootWindowTap) {
   TestGestureRecognizer* gesture_recognizer =
       new TestGestureRecognizer(root_window());
   root_window()->SetGestureRecognizerForTesting(gesture_recognizer);
 
   scoped_ptr<aura::Window> window(CreateTestWindowWithBounds(
       gfx::Rect(-100, -100, 2000, 2000), NULL));
 
   ui::GestureSequence* window_gesture_sequence =
       gesture_recognizer->GetGestureSequenceForTesting(window.get());
 
   ui::GestureSequence* root_window_gesture_sequence =
       gesture_recognizer->GetGestureSequenceForTesting(root_window());
 
   gfx::Point pos1(-10, -10);
   TouchEvent press1(ui::ET_TOUCH_PRESSED, pos1, 0, GetTime());
-  root_window()->DispatchTouchEvent(&press1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
 
   gfx::Point pos2(1000, 1000);
   TouchEvent press2(ui::ET_TOUCH_PRESSED, pos2, 1, GetTime());
-  root_window()->DispatchTouchEvent(&press2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
 
   // As these presses were outside the root window, they should be
   // associated with the root window.
   EXPECT_EQ(0, window_gesture_sequence->point_count());
   EXPECT_EQ(2, root_window_gesture_sequence->point_count());
 }
 
 TEST_F(GestureRecognizerTest, NoTapWithPreventDefaultedRelease) {
   scoped_ptr<QueueTouchEventDelegate> delegate(
       new QueueTouchEventDelegate(root_window()));
   const int kTouchId = 2;
   gfx::Rect bounds(100, 200, 100, 100);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
   delegate->set_window(window.get());
 
   delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
 
   delegate->Reset();
   delegate->ReceivedAck();
   EXPECT_TRUE(delegate->tap_down());
   delegate->Reset();
   delegate->ReceivedAckPreventDefaulted();
   EXPECT_FALSE(delegate->tap());
 }
 
 TEST_F(GestureRecognizerTest, CaptureSendsTapUp) {
@@ skipping 28 matching lines @@
   const int kWindowHeight = 45;
   const int kTouchId1 = 2;
   const int kTouchId2 = 3;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   delegate->Reset();
   TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                     kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&press1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->long_press());
   EXPECT_FALSE(delegate->two_finger_tap());
 
   delegate->Reset();
   TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(130, 201),
                     kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&press2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());  // no touch down for second tap.
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->long_press());
   EXPECT_FALSE(delegate->two_finger_tap());
 
   // Little bit of touch move should not affect our state.
   delegate->Reset();
   TouchEvent move1(ui::ET_TOUCH_MOVED, gfx::Point(102, 202),
                    kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&move1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move1);
   TouchEvent move2(ui::ET_TOUCH_MOVED, gfx::Point(131, 202),
                    kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&move2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&move2);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->long_press());
   EXPECT_FALSE(delegate->two_finger_tap());
 
   // Make sure there is enough delay before the touch is released so that it is
   // recognized as a tap.
   delegate->Reset();
   TouchEvent release1(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                       kTouchId1, press1.time_stamp() +
                       base::TimeDelta::FromMilliseconds(50));
 
-  root_window()->DispatchTouchEvent(&release1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release1);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_TRUE(delegate->two_finger_tap());
 
   // Lift second finger.
   // Make sure there is enough delay before the touch is released so that it is
   // recognized as a tap.
   delegate->Reset();
   TouchEvent release2(ui::ET_TOUCH_RELEASED, gfx::Point(130, 201),
                       kTouchId2, press2.time_stamp() +
                       base::TimeDelta::FromMilliseconds(50));
 
-  root_window()->DispatchTouchEvent(&release2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release2);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_TRUE(delegate->scroll_end());
   EXPECT_FALSE(delegate->two_finger_tap());
 }
 
 TEST_F(GestureRecognizerTest, TwoFingerTapExpired) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId1 = 2;
   const int kTouchId2 = 3;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   delegate->Reset();
   TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                     kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&press1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
 
   delegate->Reset();
   TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(130, 201),
                     kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&press2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
 
   // Send release event after sufficient delay so that two finger time expires.
   delegate->Reset();
   TouchEvent release1(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                       kTouchId1, press1.time_stamp() +
                       base::TimeDelta::FromMilliseconds(1000));
 
-  root_window()->DispatchTouchEvent(&release1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release1);
   EXPECT_FALSE(delegate->two_finger_tap());
 
   // Lift second finger.
   // Make sure there is enough delay before the touch is released so that it is
   // recognized as a tap.
   delegate->Reset();
   TouchEvent release2(ui::ET_TOUCH_RELEASED, gfx::Point(130, 201),
                       kTouchId2, press2.time_stamp() +
                       base::TimeDelta::FromMilliseconds(50));
 
-  root_window()->DispatchTouchEvent(&release2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release2);
   EXPECT_FALSE(delegate->two_finger_tap());
 }
 
 TEST_F(GestureRecognizerTest, TwoFingerTapChangesToPinch) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId1 = 2;
   const int kTouchId2 = 3;
 
   // Test moving first finger
   {
     gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
     scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
         delegate.get(), -1234, bounds, NULL));
 
     delegate->Reset();
     TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                      kTouchId1, GetTime());
-    root_window()->DispatchTouchEvent(&press1);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
 
     delegate->Reset();
     TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(130, 201),
                      kTouchId2, GetTime());
-    root_window()->DispatchTouchEvent(&press2);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
 
     SendScrollEvent(root_window(), 130, 230, kTouchId1, delegate.get());
     EXPECT_FALSE(delegate->two_finger_tap());
     EXPECT_TRUE(delegate->pinch_begin());
 
     // Make sure there is enough delay before the touch is released so that it
     // is recognized as a tap.
     delegate->Reset();
     TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                        kTouchId2, press1.time_stamp() +
                        base::TimeDelta::FromMilliseconds(50));
 
-    root_window()->DispatchTouchEvent(&release);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
     EXPECT_FALSE(delegate->two_finger_tap());
     EXPECT_TRUE(delegate->pinch_end());
   }
 
   // Test moving second finger
   {
     gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
     scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
         delegate.get(), -1234, bounds, NULL));
 
     delegate->Reset();
     TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                      kTouchId1, GetTime());
-    root_window()->DispatchTouchEvent(&press1);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
 
     delegate->Reset();
     TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(130, 201),
                      kTouchId2, GetTime());
-    root_window()->DispatchTouchEvent(&press2);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
 
     SendScrollEvent(root_window(), 101, 230, kTouchId2, delegate.get());
     EXPECT_FALSE(delegate->two_finger_tap());
     EXPECT_TRUE(delegate->pinch_begin());
 
     // Make sure there is enough delay before the touch is released so that it
     // is recognized as a tap.
     delegate->Reset();
     TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                        kTouchId1, press1.time_stamp() +
                        base::TimeDelta::FromMilliseconds(50));
 
-    root_window()->DispatchTouchEvent(&release);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
     EXPECT_FALSE(delegate->two_finger_tap());
     EXPECT_TRUE(delegate->pinch_end());
   }
 }
 
 TEST_F(GestureRecognizerTest, TwoFingerTapCancelled) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId1 = 2;
   const int kTouchId2 = 3;
 
   // Test canceling first finger.
   {
     gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
     scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
         delegate.get(), -1234, bounds, NULL));
 
     delegate->Reset();
     TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                       kTouchId1, GetTime());
-    root_window()->DispatchTouchEvent(&press1);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
 
     delegate->Reset();
     TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(130, 201),
                       kTouchId2, GetTime());
-    root_window()->DispatchTouchEvent(&press2);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
 
     delegate->Reset();
     TouchEvent cancel(ui::ET_TOUCH_CANCELLED, gfx::Point(130, 201),
                       kTouchId1, GetTime());
-    root_window()->DispatchTouchEvent(&cancel);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&cancel);
     EXPECT_FALSE(delegate->two_finger_tap());
 
     // Make sure there is enough delay before the touch is released so that it
     // is recognized as a tap.
     delegate->Reset();
     TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                        kTouchId2, press1.time_stamp() +
                        base::TimeDelta::FromMilliseconds(50));
 
-    root_window()->DispatchTouchEvent(&release);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
     EXPECT_FALSE(delegate->two_finger_tap());
   }
 
   // Test canceling second finger
   {
     gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
     scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
         delegate.get(), -1234, bounds, NULL));
 
     delegate->Reset();
     TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                      kTouchId1, GetTime());
-    root_window()->DispatchTouchEvent(&press1);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
 
     delegate->Reset();
     TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(130, 201),
                      kTouchId2, GetTime());
-    root_window()->DispatchTouchEvent(&press2);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
 
     delegate->Reset();
     TouchEvent cancel(ui::ET_TOUCH_CANCELLED, gfx::Point(130, 201),
                       kTouchId2, GetTime());
-    root_window()->DispatchTouchEvent(&cancel);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&cancel);
     EXPECT_FALSE(delegate->two_finger_tap());
 
     // Make sure there is enough delay before the touch is released so that it
     // is recognized as a tap.
     delegate->Reset();
     TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                        kTouchId1, press1.time_stamp() +
                        base::TimeDelta::FromMilliseconds(50));
 
-    root_window()->DispatchTouchEvent(&release);
+    root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
     EXPECT_FALSE(delegate->two_finger_tap());
   }
 }
 
 TEST_F(GestureRecognizerTest, VeryWideTwoFingerTouchDownShouldBeAPinch) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   const int kWindowWidth = 523;
   const int kWindowHeight = 45;
   const int kTouchId1 = 2;
   const int kTouchId2 = 3;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   delegate->Reset();
   TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                     kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&press1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->long_press());
   EXPECT_FALSE(delegate->two_finger_tap());
 
   delegate->Reset();
   TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(430, 201),
                     kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&press2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());  // no touch down for second tap.
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_TRUE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_FALSE(delegate->long_press());
   EXPECT_FALSE(delegate->two_finger_tap());
   EXPECT_TRUE(delegate->pinch_begin());
 }
 
 // Verifies if a window is the target of multiple touch-ids and we hide the
 // window everything is cleaned up correctly.
 TEST_F(GestureRecognizerTest, FlushAllOnHide) {
   scoped_ptr<GestureEventConsumeDelegate> delegate(
       new GestureEventConsumeDelegate());
   gfx::Rect bounds(0, 0, 200, 200);
   scoped_ptr<aura::Window> window(
       CreateTestWindowWithDelegate(delegate.get(), 0, bounds, NULL));
   const int kTouchId1 = 8;
   const int kTouchId2 = 2;
   TouchEvent press1(ui::ET_TOUCH_PRESSED, gfx::Point(10, 10),
                     kTouchId1, GetTime());
-  root_window()->DispatchTouchEvent(&press1);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press1);
   TouchEvent press2(ui::ET_TOUCH_PRESSED, gfx::Point(20, 20),
                     kTouchId2, GetTime());
-  root_window()->DispatchTouchEvent(&press2);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press2);
   window->Hide();
   EXPECT_EQ(NULL,
             root_window()->gesture_recognizer()->GetTouchLockedTarget(&press1));
   EXPECT_EQ(NULL,
             root_window()->gesture_recognizer()->GetTouchLockedTarget(&press2));
 }
 
 TEST_F(GestureRecognizerTest, LongPressTimerStopsOnPreventDefaultedTouchMoves) {
   scoped_ptr<QueueTouchEventDelegate> delegate(
       new QueueTouchEventDelegate(root_window()));
   const int kTouchId = 2;
   gfx::Rect bounds(100, 200, 100, 100);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
   delegate->set_window(window.get());
 
   TimerTestGestureRecognizer* gesture_recognizer =
       new TimerTestGestureRecognizer(root_window());
   TimerTestGestureSequence* gesture_sequence =
       static_cast<TimerTestGestureSequence*>(
           gesture_recognizer->GetGestureSequenceForTesting(window.get()));
 
   root_window()->SetGestureRecognizerForTesting(gesture_recognizer);
 
   delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   // Scroll around, to cancel the long press
   SendScrollEvent(root_window(), 130, 230, kTouchId, delegate.get());
 
   delegate->Reset();
   delegate->ReceivedAck();
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_TRUE(gesture_sequence->IsTimerRunning());
 
   delegate->Reset();
   delegate->ReceivedAckPreventDefaulted();
@@ skipping 30 matching lines @@
   const int kWindowWidth = 123;
   const int kWindowHeight = 45;
   const int kTouchId = 5;
   gfx::Rect bounds(100, 200, kWindowWidth, kWindowHeight);
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       delegate.get(), -1234, bounds, NULL));
 
   delegate->Reset();
   TouchEvent press(ui::ET_TOUCH_PRESSED, gfx::Point(101, 201),
                    kTouchId, GetTime());
-  root_window()->DispatchTouchEvent(&press);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&press);
   EXPECT_FALSE(delegate->tap());
   EXPECT_TRUE(delegate->tap_down());
   EXPECT_TRUE(delegate->begin());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
 
   // Move the touch-point enough so that it would normally be considered a
   // scroll. But since the touch-moves will be consumed, the scroll should not
@@ skipping 48 matching lines @@
   EXPECT_TRUE(delegate->scroll_update());
   EXPECT_FALSE(delegate->scroll_end());
   EXPECT_EQ(30, delegate->scroll_x());
   EXPECT_EQ(4, delegate->scroll_y());
 
   // Release the touch. This should end the scroll.
   delegate->Reset();
   TouchEvent release(ui::ET_TOUCH_RELEASED, gfx::Point(101, 201),
                      kTouchId, press.time_stamp() +
                      base::TimeDelta::FromMilliseconds(50));
-  root_window()->DispatchTouchEvent(&release);
+  root_window()->AsRootWindowHostDelegate()->OnHostTouchEvent(&release);
   EXPECT_FALSE(delegate->tap());
   EXPECT_FALSE(delegate->tap_down());
   EXPECT_FALSE(delegate->begin());
   EXPECT_TRUE(delegate->end());
   EXPECT_FALSE(delegate->double_tap());
   EXPECT_FALSE(delegate->scroll_begin());
   EXPECT_FALSE(delegate->scroll_update());
   EXPECT_TRUE(delegate->scroll_end());
 }
 
 }  // namespace test
 }  // namespace aura