ash: Cleanup class/struct forward declarations

ash/touch/touch_uma.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 ASH_TOUCH_TOUCH_OBSERVER_UMA_H_
 #define ASH_TOUCH_TOUCH_OBSERVER_UMA_H_
 
 #include "ash/ash_export.h"
 #include "ash/common/metrics/gesture_action_type.h"
 #include "base/macros.h"
 #include "base/memory/singleton.h"
 
 namespace aura {
 class Window;
 }
 
 namespace ui {
 class GestureEvent;
 class TouchEvent;
 }
 
-namespace gfx {
-class Point;
-}
-
 namespace ash {
 
 // Records some touch/gesture event specific details (e.g. what gestures are
 // targetted to which components etc.)
 class ASH_EXPORT TouchUMA {
  public:
   // Returns the singleton instance.
   static TouchUMA* GetInstance();
 
   void RecordGestureEvent(aura::Window* target, const ui::GestureEvent& event);
@@ skipping 16 matching lines @@
   bool touch_in_progress_;
   int burst_length_;
   base::TimeTicks last_touch_down_time_;
 
   DISALLOW_COPY_AND_ASSIGN(TouchUMA);
 };
 
 }  // namespace ash
 
 #endif  // ASH_TOUCH_TOUCH_OBSERVER_UMA_H_