ui: Remove TouchStatus in favour of EventResult.

ash/wm/system_gesture_event_filter.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_WM_SYSTEM_GESTURE_EVENT_FILTER_H_
 #define ASH_WM_SYSTEM_GESTURE_EVENT_FILTER_H_
 
 #include "ash/shell.h"
 #include "ash/touch/touch_uma.h"
 #include "base/timer.h"
@@ skipping 31 matching lines @@
                                  public aura::WindowObserver {
  public:
   SystemGestureEventFilter();
   virtual ~SystemGestureEventFilter();
 
   // Overridden from aura::EventFilter:
   virtual bool PreHandleKeyEvent(aura::Window* target,
                                  ui::KeyEvent* event) OVERRIDE;
   virtual bool PreHandleMouseEvent(aura::Window* target,
                                    ui::MouseEvent* event) OVERRIDE;
-  virtual ui::TouchStatus PreHandleTouchEvent(
+  virtual ui::EventResult PreHandleTouchEvent(
       aura::Window* target,
       ui::TouchEvent* event) OVERRIDE;
   virtual ui::EventResult PreHandleGestureEvent(
       aura::Window* target,
       ui::GestureEvent* event) OVERRIDE;
 
   // Overridden from aura::WindowObserver.
   virtual void OnWindowVisibilityChanged(aura::Window* window,
                                          bool visible) OVERRIDE;
   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
@@ skipping 17 matching lines @@
 
   TouchUMA touch_uma_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemGestureEventFilter);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_WM_SYSTEM_GESTURE_EVENT_FILTER_H_