Revert of Unified Gesture Recognizer

ui/aura/window_event_dispatcher.h

Index: ui/aura/window_event_dispatcher.h
diff --git a/ui/aura/window_event_dispatcher.h b/ui/aura/window_event_dispatcher.h
index 79ba3c7b2cbc17cf5c45f2994d6c21658cb90cc4..1a877f887349e889275e79c8b67a094e923e4e60 100644
--- a/ui/aura/window_event_dispatcher.h
+++ b/ui/aura/window_event_dispatcher.h
@@ -72,6 +72,11 @@
 
   void DispatchCancelModeEvent();
 
+  // Handles a gesture event. Returns true if handled. Unlike the other
+  // event-dispatching function (e.g. for touch/mouse/keyboard events), gesture
+  // events are dispatched from GestureRecognizer instead of WindowTreeHost.
+  void DispatchGestureEvent(ui::GestureEvent* event);
+
   // Dispatches a ui::ET_MOUSE_EXITED event at |point|.
   // TODO(beng): needed only for WTH::OnCursorVisibilityChanged().
   void DispatchMouseExitAtPoint(const gfx::Point& point);
@@ -179,7 +184,7 @@
 
   // Overridden from ui::GestureEventHelper.
   virtual bool CanDispatchToConsumer(ui::GestureConsumer* consumer) OVERRIDE;
-  virtual void DispatchGestureEvent(ui::GestureEvent* event) OVERRIDE;
+  virtual void DispatchPostponedGestureEvent(ui::GestureEvent* event) OVERRIDE;
   virtual void DispatchCancelTouchEvent(ui::TouchEvent* event) OVERRIDE;
 
   // Overridden from WindowObserver: