Aura: don't synthesize mouse moves while holding pointer.

ui/aura/root_window_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 "ui/aura/root_window.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/run_loop.h"
@@ skipping 654 matching lines @@
   // Check that if the other message is another MOUSE_DRAGGED, we still coalesce
   // them.
   dispatcher()->HoldPointerMoves();
   DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
   dispatcher()->ReleasePointerMoves();
   DispatchEventUsingWindowDispatcher(&mouse_dragged_event2);
   EXPECT_EQ("MOUSE_DRAGGED", EventTypesToString(filter->events()));
   filter->Reset();
   RunAllPendingInMessageLoop();
   EXPECT_TRUE(filter->events().empty());
+
+  // Check that no events are synthesized while holding, and all held move
+  // events are dropped on window changes.
+  dispatcher()->HoldPointerMoves();
+  DispatchEventUsingWindowDispatcher(&mouse_dragged_event);
+  DispatchEventUsingWindowDispatcher(&mouse_dragged_event2);
+  dispatcher()->OnWindowBoundsChanged(window.get(), true);
+  RunAllPendingInMessageLoop();
+  EXPECT_TRUE(filter->events().empty());
+  dispatcher()->ReleasePointerMoves();
+  RunAllPendingInMessageLoop();
+  EXPECT_TRUE(filter->events().empty());
 }
 
 TEST_F(RootWindowTest, TouchMovesHeld) {
   EventFilterRecorder* filter = new EventFilterRecorder;
   root_window()->SetEventFilter(filter);  // passes ownership
 
   test::TestWindowDelegate delegate;
   scoped_ptr<aura::Window> window(CreateTestWindowWithDelegate(
       &delegate, 1, gfx::Rect(50, 50, 100, 100), root_window()));
 
@@ skipping 1040 matching lines @@
   EXPECT_EQ("TOUCH_MOVED TOUCH_RELEASED GESTURE_SCROLL_END GESTURE_END",
             EventTypesToString(events));
   ASSERT_EQ(2u, filter->touch_locations().size());
   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
             filter->touch_locations()[0].ToString());
   EXPECT_EQ(gfx::Point(-40, 10).ToString(),
             filter->touch_locations()[1].ToString());
 }
 
 }  // namespace aura