Parameterize Ash unittests to pass with material design enabled

ash/display/window_tree_host_manager_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 "ash/display/window_tree_host_manager.h"
 
 #include <memory>
 
 #include "ash/common/ash_switches.h"
+#include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/wm/window_state.h"
 #include "ash/common/wm/wm_event.h"
 #include "ash/display/display_info.h"
 #include "ash/display/display_layout_store.h"
 #include "ash/display/display_manager.h"
 #include "ash/display/display_util.h"
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_widget.h"
 #include "ash/shell.h"
+#include "ash/test/ash_md_test_base.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/test/ash_test_helper.h"
 #include "ash/test/cursor_manager_test_api.h"
 #include "ash/test/display_manager_test_api.h"
 #include "ash/test/test_shell_delegate.h"
 #include "ash/wm/window_state_aura.h"
 #include "base/command_line.h"
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/env.h"
@@ skipping 343 matching lines @@
 
  private:
   // views::MouseWatcherListener:
   void MouseMovedOutOfHost() override {}
 
   DISALLOW_COPY_AND_ASSIGN(TestMouseWatcherListener);
 };
 
 }  // namespace
 
-typedef test::AshTestBase WindowTreeHostManagerTest;
+using WindowTreeHostManagerTest = test::AshMDTestBase;
+
+// The prefix has intentionally been left blank since there is only one
+// parameterization of this test fixture.
+INSTANTIATE_TEST_CASE_P(
+    /* prefix intentionally left blank */,
+    WindowTreeHostManagerTest,
+    testing::Values(MaterialDesignController::NON_MATERIAL,
+                    MaterialDesignController::MATERIAL_NORMAL,
+                    MaterialDesignController::MATERIAL_EXPERIMENTAL));
 
 TEST_F(WindowTreeHostManagerShutdownTest, Shutdown) {
   if (!SupportsMultipleDisplays())
     return;
 
   UpdateDisplay("444x333, 200x200");
 }
 
 TEST_F(WindowTreeHostManagerStartupTest, Startup) {
   if (!SupportsMultipleDisplays())
     return;
 
   EXPECT_TRUE(startup_helper()->displays_initialized());
 }
 
-TEST_F(WindowTreeHostManagerTest, SecondaryDisplayLayout) {
+TEST_P(WindowTreeHostManagerTest, SecondaryDisplayLayout) {
   if (!SupportsMultipleDisplays())
     return;
 
   // Creates windows to catch activation change event.
   std::unique_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
   w1->Focus();
 
   TestObserver observer;
   UpdateDisplay("500x500,400x400");
   EXPECT_EQ(1, observer.CountAndReset());  // resize and add
@@ skipping 141 matching lines @@
 }
 
 DisplayInfo CreateMirroredDisplayInfo(int64_t id, float device_scale_factor) {
   DisplayInfo info = CreateDisplayInfo(id, 0, display::Display::ROTATE_0);
   info.set_device_scale_factor(device_scale_factor);
   return info;
 }
 
 }  // namespace
 
-TEST_F(WindowTreeHostManagerTest, MirrorToDockedWithFullscreen) {
+TEST_P(WindowTreeHostManagerTest, MirrorToDockedWithFullscreen) {
   if (!SupportsMultipleDisplays())
     return;
 
   // Creates windows to catch activation change event.
   std::unique_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
   w1->Focus();
 
   // Docked mode.
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
@@ skipping 29 matching lines @@
   EXPECT_EQ(1, observer.GetWorkareaChangedCountAndReset());
   EXPECT_EQ(1, observer.GetPrimaryChangedCountAndReset());
   EXPECT_EQ(1, observer.CountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 
   EXPECT_TRUE(window_state->IsFullscreen());
   EXPECT_EQ("0,0 500x500", w1->bounds().ToString());
 }
 
-TEST_F(WindowTreeHostManagerTest, BoundsUpdated) {
+TEST_P(WindowTreeHostManagerTest, BoundsUpdated) {
   if (!SupportsMultipleDisplays())
     return;
 
   // Creates windows to catch activation change event.
   std::unique_ptr<aura::Window> w1(CreateTestWindowInShellWithId(1));
   w1->Focus();
 
   TestObserver observer;
   SetDefaultDisplayLayout(display::DisplayPlacement::BOTTOM);
   UpdateDisplay("200x200,300x300");  // layout, resize and add.
@@ skipping 86 matching lines @@
   SetDisplayUIScale(primary_id, 1.125f);
   EXPECT_EQ(0, observer.CountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
   SetDisplayUIScale(primary_id, 1.125f);
   EXPECT_EQ(0, observer.CountAndReset());
   EXPECT_EQ(0, observer.GetFocusChangedCountAndReset());
   EXPECT_EQ(0, observer.GetActivationChangedCountAndReset());
 }
 
-TEST_F(WindowTreeHostManagerTest, FindNearestDisplay) {
+TEST_P(WindowTreeHostManagerTest, FindNearestDisplay) {
   if (!SupportsMultipleDisplays())
     return;
 
   WindowTreeHostManager* window_tree_host_manager =
       Shell::GetInstance()->window_tree_host_manager();
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   UpdateDisplay("200x200,300x300");
   display_manager->SetLayoutForCurrentDisplays(
       test::CreateDisplayLayout(display::DisplayPlacement::RIGHT, 50));
@@ skipping 41 matching lines @@
   EXPECT_EQ(secondary_display.id(),
             display::Screen::GetScreen()
                 ->GetDisplayNearestPoint(gfx::Point(176, 225))
                 .id());
   EXPECT_EQ(secondary_display.id(),
             display::Screen::GetScreen()
                 ->GetDisplayNearestPoint(gfx::Point(300, 400))
                 .id());
 }
 
-TEST_F(WindowTreeHostManagerTest, SwapPrimaryById) {
+TEST_P(WindowTreeHostManagerTest, SwapPrimaryById) {
   if (!SupportsMultipleDisplays())
     return;
+  const int height_offset = GetMdMaximizedWindowHeightOffset();
 
   WindowTreeHostManager* window_tree_host_manager =
       Shell::GetInstance()->window_tree_host_manager();
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   UpdateDisplay("200x200,300x300");
   display::Display primary_display =
       display::Screen::GetScreen()->GetPrimaryDisplay();
   display::Display secondary_display = ScreenUtil::GetSecondaryDisplay();
 
@@ skipping 13 matching lines @@
   EXPECT_NE(primary_root, secondary_root);
   EXPECT_EQ(primary_display.id(),
             display::Screen::GetScreen()
                 ->GetDisplayNearestPoint(gfx::Point(-100, -100))
                 .id());
   EXPECT_EQ(
       primary_display.id(),
       display::Screen::GetScreen()->GetDisplayNearestWindow(nullptr).id());
 
   EXPECT_EQ("0,0 200x200", primary_display.bounds().ToString());
-  EXPECT_EQ("0,0 200x153", primary_display.work_area().ToString());
+  EXPECT_EQ(gfx::Rect(0, 0, 200, 153 + height_offset).ToString(),
+            primary_display.work_area().ToString());
   EXPECT_EQ("200,0 300x300", secondary_display.bounds().ToString());
-  EXPECT_EQ("200,0 300x253", secondary_display.work_area().ToString());
+  EXPECT_EQ(gfx::Rect(200, 0, 300, 253 + height_offset).ToString(),
+            secondary_display.work_area().ToString());
   EXPECT_EQ(
       "id=2200000001, parent=2200000000, right, 50",
       display_manager->GetCurrentDisplayLayout().placement_list[0].ToString());
 
   // Switch primary and secondary by display ID.
   TestObserver observer;
   window_tree_host_manager->SetPrimaryDisplayId(secondary_display.id());
   EXPECT_EQ(secondary_display.id(),
             display::Screen::GetScreen()->GetPrimaryDisplay().id());
   EXPECT_EQ(primary_display.id(), ScreenUtil::GetSecondaryDisplay().id());
   EXPECT_LT(0, observer.CountAndReset());
 
   EXPECT_EQ(primary_root, window_tree_host_manager->GetRootWindowForDisplayId(
                               secondary_display.id()));
   EXPECT_EQ(secondary_root, window_tree_host_manager->GetRootWindowForDisplayId(
                                 primary_display.id()));
   EXPECT_TRUE(primary_root->Contains(shelf_window));
   EXPECT_FALSE(secondary_root->Contains(shelf_window));
 
   const display::DisplayLayout& inverted_layout =
       display_manager->GetCurrentDisplayLayout();
 
   EXPECT_EQ("id=2200000000, parent=2200000001, left, -50",
             inverted_layout.placement_list[0].ToString());
   // Test if the bounds are correctly swapped.
   display::Display swapped_primary =
       display::Screen::GetScreen()->GetPrimaryDisplay();
   display::Display swapped_secondary = ScreenUtil::GetSecondaryDisplay();
   EXPECT_EQ("0,0 300x300", swapped_primary.bounds().ToString());
-  EXPECT_EQ("0,0 300x253", swapped_primary.work_area().ToString());
+  EXPECT_EQ(gfx::Rect(0, 0, 300, 253 + height_offset).ToString(),
+            swapped_primary.work_area().ToString());
   EXPECT_EQ("-200,-50 200x200", swapped_secondary.bounds().ToString());
-  EXPECT_EQ("-200,-50 200x153", swapped_secondary.work_area().ToString());
+  EXPECT_EQ(gfx::Rect(-200, -50, 200, 153 + height_offset).ToString(),
+            swapped_secondary.work_area().ToString());
 
   // Calling the same ID don't do anything.
   window_tree_host_manager->SetPrimaryDisplayId(secondary_display.id());
   EXPECT_EQ(0, observer.CountAndReset());
 
   aura::WindowTracker tracker;
   tracker.Add(primary_root);
   tracker.Add(secondary_root);
 
   // Deleting 2nd display should move the primary to original primary display.
@@ skipping 51 matching lines @@
   EXPECT_EQ(primary_display.id(),
             display::Screen::GetScreen()->GetPrimaryDisplay().id());
   EXPECT_EQ(third_display_info.id(), ScreenUtil::GetSecondaryDisplay().id());
   EXPECT_EQ(primary_root, window_tree_host_manager->GetRootWindowForDisplayId(
                               primary_display.id()));
   EXPECT_NE(primary_root, window_tree_host_manager->GetRootWindowForDisplayId(
                               third_display_info.id()));
   EXPECT_TRUE(primary_root->Contains(shelf_window));
 }
 
-TEST_F(WindowTreeHostManagerTest, NoSwapPrimaryWithThreeDisplays) {
+TEST_P(WindowTreeHostManagerTest, NoSwapPrimaryWithThreeDisplays) {
   if (!SupportsMultipleDisplays())
     return;
   int64_t primary = display::Screen::GetScreen()->GetPrimaryDisplay().id();
   UpdateDisplay("500x400,400x300,300x200");
   EXPECT_EQ(primary, display::Screen::GetScreen()->GetPrimaryDisplay().id());
   Shell::GetInstance()->window_tree_host_manager()->SetPrimaryDisplayId(
       ScreenUtil::GetSecondaryDisplay().id());
   EXPECT_EQ(primary, display::Screen::GetScreen()->GetPrimaryDisplay().id());
 }
 
-TEST_F(WindowTreeHostManagerTest, OverscanInsets) {
+TEST_P(WindowTreeHostManagerTest, OverscanInsets) {
   if (!SupportsMultipleDisplays())
     return;
 
   WindowTreeHostManager* window_tree_host_manager =
       Shell::GetInstance()->window_tree_host_manager();
   TestEventHandler event_handler;
   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
 
   UpdateDisplay("120x200,300x400*2");
   display::Display display1 = display::Screen::GetScreen()->GetPrimaryDisplay();
@@ skipping 29 matching lines @@
 
   test::SwapPrimaryDisplay();
   point.SetPoint(0, 0);
   Shell::GetAllRootWindows()[1]->GetHost()->GetRootTransform().TransformPoint(
       &point);
   EXPECT_EQ("15,10", point.ToString());
 
   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
 }
 
-TEST_F(WindowTreeHostManagerTest, Rotate) {
+TEST_P(WindowTreeHostManagerTest, Rotate) {
   if (!SupportsMultipleDisplays())
     return;
 
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
   TestEventHandler event_handler;
   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
 
   UpdateDisplay("120x200,300x400*2");
   display::Display display1 = display::Screen::GetScreen()->GetPrimaryDisplay();
   int64_t display2_id = ScreenUtil::GetSecondaryDisplay().id();
@@ skipping 62 matching lines @@
             GetActiveDisplayRotation(display2_id));
   EXPECT_EQ(1, observer.GetRotationChangedCountAndReset());
 
   generator1.MoveMouseToInHost(50, 40);
   EXPECT_EQ("69,159", event_handler.GetLocationAndReset());
 #endif
 
   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
 }
 
-TEST_F(WindowTreeHostManagerTest, ScaleRootWindow) {
+TEST_P(WindowTreeHostManagerTest, ScaleRootWindow) {
   if (!SupportsMultipleDisplays())
     return;
 
   TestEventHandler event_handler;
   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
 
   UpdateDisplay("600x400*2@1.5,500x300");
 
   display::Display display1 = display::Screen::GetScreen()->GetPrimaryDisplay();
   test::ScopedSetInternalDisplayId set_internal(display1.id());
@@ skipping 15 matching lines @@
   display2 = ScreenUtil::GetSecondaryDisplay();
   EXPECT_EQ("0,0 375x250", display1.bounds().ToString());
   EXPECT_EQ("0,0 375x250", root_windows[0]->bounds().ToString());
   EXPECT_EQ("375,0 500x300", display2.bounds().ToString());
   EXPECT_EQ(1.25f, GetStoredUIScale(display1.id()));
   EXPECT_EQ(1.0f, GetStoredUIScale(display2.id()));
 
   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
 }
 
-TEST_F(WindowTreeHostManagerTest, TouchScale) {
+TEST_P(WindowTreeHostManagerTest, TouchScale) {
   if (!SupportsMultipleDisplays())
     return;
 
   TestEventHandler event_handler;
   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
 
   UpdateDisplay("200x200*2");
   display::Display display = display::Screen::GetScreen()->GetPrimaryDisplay();
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
   aura::Window* root_window = root_windows[0];
@@ skipping 11 matching lines @@
 
   // ordinal_offset is invariant to the device scale factor.
   EXPECT_EQ(event_handler.scroll_x_offset(),
             event_handler.scroll_x_offset_ordinal());
   EXPECT_EQ(event_handler.scroll_y_offset(),
             event_handler.scroll_y_offset_ordinal());
 
   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
 }
 
-TEST_F(WindowTreeHostManagerTest, ConvertHostToRootCoords) {
+TEST_P(WindowTreeHostManagerTest, ConvertHostToRootCoords) {
   if (!SupportsMultipleDisplays())
     return;
 
   TestEventHandler event_handler;
   Shell::GetInstance()->AddPreTargetHandler(&event_handler);
 
   UpdateDisplay("600x400*2/r@1.5");
 
   display::Display display1 = display::Screen::GetScreen()->GetPrimaryDisplay();
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
@@ skipping 41 matching lines @@
   generator.MoveMouseToInHost(599, 399);
   EXPECT_EQ("0,449", event_handler.GetLocationAndReset());
   generator.MoveMouseToInHost(0, 399);
   EXPECT_EQ("0,0", event_handler.GetLocationAndReset());
 
   Shell::GetInstance()->RemovePreTargetHandler(&event_handler);
 }
 
 // Make sure that the compositor based mirroring can switch
 // from/to dock mode.
-TEST_F(WindowTreeHostManagerTest, DockToSingle) {
+TEST_P(WindowTreeHostManagerTest, DockToSingle) {
   if (!SupportsMultipleDisplays())
     return;
 
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   const int64_t internal_id = 1;
 
   const DisplayInfo internal_display_info =
       CreateDisplayInfo(internal_id, 0, display::Display::ROTATE_0);
   const DisplayInfo external_display_info =
@@ skipping 25 matching lines @@
   display_info_list.push_back(internal_display_info);
   display_manager->OnNativeDisplaysChanged(display_info_list);
   EXPECT_TRUE(Shell::GetPrimaryRootWindow()
                   ->GetHost()
                   ->GetRootTransform()
                   .IsIdentityOrIntegerTranslation());
 }
 
 // Tests if switching two displays at the same time while the primary display
 // is swapped should not cause a crash. (crbug.com/426292)
-TEST_F(WindowTreeHostManagerTest, ReplaceSwappedPrimary) {
+TEST_P(WindowTreeHostManagerTest, ReplaceSwappedPrimary) {
   if (!SupportsMultipleDisplays())
     return;
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   const DisplayInfo first_display_info =
       CreateDisplayInfo(10, 0, display::Display::ROTATE_0);
   const DisplayInfo second_display_info =
       CreateDisplayInfo(11, 1, display::Display::ROTATE_0);
 
   std::vector<DisplayInfo> display_info_list;
@@ skipping 42 matching lines @@
 };
 
 }  // names
 
 // Make sure that GetShelfDisplayBoundsInRoot returns the correct bounds
 // when primary display gets replaced in a following scenario.
 // 1) Two displays connected: a) b)
 // 2) both are disconnected and new one with the same size as b) is connected
 // in one configuration event.
 // See crbug.com/547280.
-TEST_F(WindowTreeHostManagerTest, ReplacePrimary) {
+TEST_P(WindowTreeHostManagerTest, ReplacePrimary) {
   if (!SupportsMultipleDisplays())
     return;
   DisplayManager* display_manager = Shell::GetInstance()->display_manager();
 
   DisplayInfo first_display_info =
       CreateDisplayInfo(10, 0, display::Display::ROTATE_0);
   first_display_info.SetBounds(gfx::Rect(0, 0, 400, 400));
   const DisplayInfo second_display_info =
       CreateDisplayInfo(11, 500, display::Display::ROTATE_0);
 
@@ skipping 11 matching lines @@
   display_info_list.clear();
   const DisplayInfo new_first_display_info =
       CreateDisplayInfo(new_display_id, 0, display::Display::ROTATE_0);
 
   display_info_list.push_back(new_first_display_info);
   display_manager->OnNativeDisplaysChanged(display_info_list);
   EXPECT_EQ("0,0 500x500", test_observer.shelf_display_bounds().ToString());
   primary_root->RemoveObserver(&test_observer);
 }
 
-TEST_F(WindowTreeHostManagerTest, UpdateMouseLocationAfterDisplayChange) {
+TEST_P(WindowTreeHostManagerTest, UpdateMouseLocationAfterDisplayChange) {
   if (!SupportsMultipleDisplays())
     return;
 
   UpdateDisplay("200x200,300x300");
   aura::Window::Windows root_windows = Shell::GetAllRootWindows();
 
   aura::Env* env = aura::Env::GetInstance();
 
   ui::test::EventGenerator generator(root_windows[0]);
 
@@ skipping 22 matching lines @@
 
   // Move the mouse pointer to the bottom of 1st display.
   generator.MoveMouseToInHost(150, 290);
   EXPECT_EQ("150,290", env->last_mouse_location().ToString());
 
   // The mouse pointer is now on 2nd display.
   UpdateDisplay("300x280,200x200");
   EXPECT_EQ("450,10", env->last_mouse_location().ToString());
 }
 
-TEST_F(WindowTreeHostManagerTest,
+TEST_P(WindowTreeHostManagerTest,
        UpdateMouseLocationAfterDisplayChange_2ndOnLeft) {
   if (!SupportsMultipleDisplays())
     return;
 
   // Set the 2nd display on the left.
   DisplayLayoutStore* layout_store =
       Shell::GetInstance()->display_manager()->layout_store();
   display::DisplayPlacement new_default(display::DisplayPlacement::LEFT, 0);
   layout_store->SetDefaultDisplayPlacement(new_default);
 
@@ skipping 19 matching lines @@
   EXPECT_EQ("-100,50", env->last_mouse_location().ToString());
 
   // 2nd display was disconnected. Mouse pointer should move to
   // 1st display.
   UpdateDisplay("300x300");
   EXPECT_EQ("150,150", env->last_mouse_location().ToString());
 }
 
 // Test that the cursor swaps displays and that its scale factor and rotation
 // are updated when the primary display is swapped.
-TEST_F(WindowTreeHostManagerTest,
+TEST_P(WindowTreeHostManagerTest,
        UpdateMouseLocationAfterDisplayChange_SwapPrimary) {
   if (!SupportsMultipleDisplays())
     return;
 
   UpdateDisplay("200x200,200x200*2/r");
 
   aura::Env* env = aura::Env::GetInstance();
   Shell* shell = Shell::GetInstance();
   WindowTreeHostManager* window_tree_host_manager =
       shell->window_tree_host_manager();
   test::CursorManagerTestApi test_api(shell->cursor_manager());
 
   window_tree_host_manager->GetPrimaryRootWindow()->MoveCursorTo(
       gfx::Point(20, 50));
 
   EXPECT_EQ("20,50", env->last_mouse_location().ToString());
   EXPECT_EQ(1.0f, test_api.GetCurrentCursor().device_scale_factor());
   EXPECT_EQ(display::Display::ROTATE_0, test_api.GetCurrentCursorRotation());
 
   test::SwapPrimaryDisplay();
 
   EXPECT_EQ("20,50", env->last_mouse_location().ToString());
   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
   EXPECT_EQ(display::Display::ROTATE_90, test_api.GetCurrentCursorRotation());
 }
 
 // Test that the cursor moves to the other display and that its scale factor
 // and rotation are updated when the primary display is disconnected.
-TEST_F(WindowTreeHostManagerTest,
+TEST_P(WindowTreeHostManagerTest,
        UpdateMouseLocationAfterDisplayChange_PrimaryDisconnected) {
   if (!SupportsMultipleDisplays())
     return;
 
   aura::Env* env = aura::Env::GetInstance();
   Shell* shell = Shell::GetInstance();
   WindowTreeHostManager* window_tree_host_manager =
       shell->window_tree_host_manager();
   test::CursorManagerTestApi test_api(shell->cursor_manager());
 
@@ skipping 15 matching lines @@
             window_tree_host_manager->GetPrimaryDisplayId());
 
   // Cursor should be centered on the remaining display.
   EXPECT_EQ("75,75", env->last_mouse_location().ToString());
   EXPECT_EQ(2.0f, test_api.GetCurrentCursor().device_scale_factor());
   EXPECT_EQ(display::Display::ROTATE_90, test_api.GetCurrentCursorRotation());
 }
 
 // GetRootWindowForDisplayId() for removed display::Display during
 // OnDisplayRemoved() should not cause crash. See http://crbug.com/415222
-TEST_F(WindowTreeHostManagerTest,
+TEST_P(WindowTreeHostManagerTest,
        GetRootWindowForDisplayIdDuringDisplayDisconnection) {
   if (!SupportsMultipleDisplays())
     return;
 
   UpdateDisplay("300x300,200x200");
   aura::Window* root2 =
       Shell::GetInstance()
           ->window_tree_host_manager()
           ->GetRootWindowForDisplayId(ScreenUtil::GetSecondaryDisplay().id());
   views::Widget* widget = views::Widget::CreateWindowWithContextAndBounds(
@@ skipping 12 matching lines @@
       widget->GetNativeWindow()->GetRootWindow());
   event_generator.MoveMouseToCenterOf(widget->GetNativeWindow());
 
   UpdateDisplay("300x300");
   watcher.Stop();
 
   widget->CloseNow();
 }
 
 }  // namespace ash