Don't delay tap down(show_press) gesture events on gesture_event_filter for Android

content/browser/renderer_host/render_widget_host_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/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/shared_memory.h"
 #include "base/timer.h"
 #include "content/browser/browser_thread_impl.h"
 #include "content/browser/renderer_host/backing_store.h"
@@ skipping 123 matching lines @@
   }
 
   unsigned GestureEventDebouncingQueueSize() {
     return gesture_event_filter_->debouncing_deferral_queue_.size();
   }
 
   WebGestureEvent GestureEventQueueEventAt(int i) {
     return gesture_event_filter_->coalesced_gesture_events_.at(i);
   }
 
+  bool shouldDeferTapDownEvents() {
+    return gesture_event_filter_->maximum_tap_gap_time_ms_ != 0;
+  }
+
   bool ScrollingInProgress() {
     return gesture_event_filter_->scrolling_in_progress_;
   }
 
   bool FlingInProgress() {
     return gesture_event_filter_->fling_in_progress_;
   }
 
   void SetupForOverscrollControllerTest() {
     InitializeOverscrollController();
@@ skipping 1282 matching lines @@
   EXPECT_EQ(1U, process_->sink().message_count());
   EXPECT_EQ(2U, host_->GestureEventLastQueueEventSize());
   EXPECT_EQ(3U, host_->GestureEventDebouncingQueueSize());
 
   MessageLoop::current()->PostDelayedTask(
       FROM_HERE, MessageLoop::QuitClosure(), TimeDelta::FromMilliseconds(5));
   MessageLoop::current()->Run();
 
   // The deferred events are correctly queued in coalescing queue.
   EXPECT_EQ(1U, process_->sink().message_count());
-  // NOTE: The  TapDown is still deferred hence not queued.
-  EXPECT_EQ(4U, host_->GestureEventLastQueueEventSize());
+  if (host_->shouldDeferTapDownEvents())
+    // NOTE: The  TapDown is still deferred hence not queued.
+    EXPECT_EQ(4U, host_->GestureEventLastQueueEventSize());
+  else
+    EXPECT_EQ(5U, host_->GestureEventLastQueueEventSize());
   EXPECT_EQ(0U, host_->GestureEventDebouncingQueueSize());
   EXPECT_FALSE(host_->ScrollingInProgress());
 
   // Verify that the coalescing queue contains the correct events.
   WebInputEvent::Type expected[] = {
       WebInputEvent::GestureScrollUpdate,
       WebInputEvent::GestureScrollUpdate,
       WebInputEvent::GestureScrollEnd,
       WebInputEvent::GestureFlingStart};
 
@@ skipping 970 matching lines @@
   EXPECT_EQ(1U, host_->GestureEventLastQueueEventSize());
   EXPECT_EQ(0U, host_->GestureEventDebouncingQueueSize());
 
   SendInputEventACK(WebKit::WebInputEvent::GestureScrollEnd, false);
   EXPECT_EQ(0U, process_->sink().message_count());
   EXPECT_EQ(0U, host_->GestureEventLastQueueEventSize());
   EXPECT_EQ(0U, host_->GestureEventDebouncingQueueSize());
 }
 
 }  // namespace content