gesture recognizer: Remove the touch-event queue.

ui/aura/root_window.h

 // 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.
 
 #ifndef UI_AURA_ROOT_WINDOW_H_
 #define UI_AURA_ROOT_WINDOW_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 185 matching lines @@
 
   // Converts |point| from the root window's coordinate system to native
   // screen's.
   void ConvertPointToNativeScreen(gfx::Point* point) const;
 
   // Converts |point| from native screen coordinate system to the root window's.
   void ConvertPointFromNativeScreen(gfx::Point* point) const;
 
   // Gesture Recognition -------------------------------------------------------
 
-  // When a touch event is dispatched to a Window, it can notify the RootWindow
-  // to queue the touch event for asynchronous gesture recognition. These are
-  // the entry points for the asynchronous processing of the queued touch
-  // events.
-  // Process the next touch event for gesture recognition. |processed| indicates
-  // whether the queued event was processed by the window or not.
-  void AdvanceQueuedTouchEvent(Window* window, bool processed);
+  // When a touch event is dispatched to a Window, it may want to process the
+  // touch event asynchronously. In such cases, the window should consume the
+  // event during the event dispatch. Once the event is properly processed, the
+  // window should let the RootWindow know about the result of the event
+  // processing, so that gesture events can be properly created and dispatched.
+  void ProcessedTouchEvent(ui::TouchEvent* event,
+                           Window* window,
+                           ui::EventResult result);
 
   ui::GestureRecognizer* gesture_recognizer() const {
     return gesture_recognizer_.get();
   }
 
   // Provided only for testing:
   void SetGestureRecognizerForTesting(ui::GestureRecognizer* gr);
 
   // Returns the accelerated widget from the RootWindowHost.
   gfx::AcceleratedWidget GetAcceleratedWidget();
@@ skipping 187 matching lines @@
 
   CompositorLock* compositor_lock_;
   bool draw_on_compositor_unlock_;
 
   DISALLOW_COPY_AND_ASSIGN(RootWindow);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_H_