aura: Start using EventPrcessor interface for event dispatch.

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 "testing/gtest/include/gtest/gtest.h"
 #include "ui/aura/client/event_client.h"
@@ skipping 613 matching lines @@
   // Check that on ReleasePointerMoves, held events are not dispatched
   // immediately, but posted instead.
   dispatcher()->AsRootWindowHostDelegate()->OnHostMouseEvent(
       &mouse_dragged_event);
   dispatcher()->ReleasePointerMoves();
   EXPECT_TRUE(filter->events().empty());
   RunAllPendingInMessageLoop();
   EXPECT_EQ("MOUSE_DRAGGED", EventTypesToString(filter->events()));
   filter->events().clear();
 
-  // However if another message comes in before the dispatch,
-  // the Check that on ReleasePointerMoves, held events are not dispatched
-  // immediately, but posted instead.
+  // However if another message comes in before the dispatch of the posted
+  // event, check that the posted event is dispatched before this new event.
   dispatcher()->HoldPointerMoves();
   dispatcher()->AsRootWindowHostDelegate()->OnHostMouseEvent(
       &mouse_dragged_event);
   dispatcher()->ReleasePointerMoves();
   dispatcher()->AsRootWindowHostDelegate()->OnHostMouseEvent(
       &mouse_pressed_event);
   EXPECT_EQ("MOUSE_DRAGGED MOUSE_PRESSED",
             EventTypesToString(filter->events()));
   filter->events().clear();
   RunAllPendingInMessageLoop();
@@ skipping 797 matching lines @@
 
   EXPECT_EQ("TOUCH_PRESSED GESTURE_BEGIN GESTURE_TAP_DOWN TOUCH_MOVED "
             "GESTURE_TAP_CANCEL GESTURE_SCROLL_BEGIN GESTURE_SCROLL_UPDATE "
             "TOUCH_CANCELLED GESTURE_SCROLL_END GESTURE_END",
             EventTypesToString(filter1->events()));
 
   EXPECT_TRUE(filter2->events().empty());
 }
 
 }  // namespace aura