Eliminate ash::internal namespace

ash/wm/gestures/overview_gesture_handler.h

 // Copyright 2013 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_WM_GESTURES_OVERVIEW_GESTURE_HANDLER_H_
 #define ASH_WM_GESTURES_OVERVIEW_GESTURE_HANDLER_H_
 
 #include "base/basictypes.h"
 
 namespace aura {
 class Window;
 }
 
 namespace ui {
 class GestureEvent;
 class ScrollEvent;
 }
 
 namespace ash {
-namespace internal {
 
 // This handles a 3-finger swipe down gesture from the top of the screen to
 // enter overview mode.
 class OverviewGestureHandler {
  public:
   OverviewGestureHandler();
   virtual ~OverviewGestureHandler();
 
   // Processes a scroll event and may start overview. Returns true if the event
   // has been handled and should not be processed further, false otherwise.
   bool ProcessScrollEvent(const ui::ScrollEvent& event);
 
   // Processes a gesture event and may start overview. Returns true if the event
   // has been handled and should not be processed any farther, false otherwise.
   bool ProcessGestureEvent(const ui::GestureEvent& event);
 
  private:
   // True if the current/last gesture began in the top bezel.
   bool in_top_bezel_gesture_;
 
   // The total distance scrolled with three fingers.
   float scroll_x_;
   float scroll_y_;
 
   DISALLOW_COPY_AND_ASSIGN(OverviewGestureHandler);
 };
 
-}  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_GESTURES_OVERVIEW_GESTURE_HANDLER_H_