mash: Add autoclick app.

ash/autoclick/common/autoclick_controller_common.h

 // Copyright 2016 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_AUTOCLICK_COMMON_AUTOCLICK_CONTROLLER_COMMON_H
 #define ASH_AUTOCLICK_COMMON_AUTOCLICK_CONTROLLER_COMMON_H
 
 #include "ash/autoclick/common/autoclick_ring_handler.h"
 #include "base/macros.h"
 #include "base/timer/timer.h"
@@ skipping 11 matching lines @@
 class ScrollEvent;
 }
 
 namespace ash {
 class AutoclickControllerCommonDelegate;
 
 // Autoclick is one of the accessibility features. If enabled, two circles will
 // animate at the mouse event location and an automatic click event will happen
 // after a certain amout of time at that location.
 // AutoclickControllerCommon is the common code for both ash and mus to handle
-// events and to manage autoclick time delay, timer and ring widget.
+// events and to manage autoclick time delay and timer.
 class AutoclickControllerCommon {
  public:
   AutoclickControllerCommon(base::TimeDelta delay,
                             AutoclickControllerCommonDelegate* delegate);
   ~AutoclickControllerCommon();
 
   void HandleMouseEvent(const ui::MouseEvent& event);
   void HandleKeyEvent(const ui::KeyEvent& event);
 
   void SetAutoclickDelay(const base::TimeDelta delay);
   void CancelAutoclick();
 
  private:
   void InitClickTimer();
 
   void DoAutoclick();
 
   void UpdateRingWidget(const gfx::Point& mouse_location);
 
   base::TimeDelta delay_;
   int mouse_event_flags_;
   std::unique_ptr<base::Timer> autoclick_timer_;
   AutoclickControllerCommonDelegate* delegate_;
-  std::unique_ptr<views::Widget> widget_;
+  views::Widget* widget_;
   // The position in screen coordinates used to determine
   // the distance the mouse has moved.
   gfx::Point anchor_location_;
   std::unique_ptr<AutoclickRingHandler> autoclick_ring_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(AutoclickControllerCommon);
 };
 
 }  // namespace ash
 
 #endif  // ASH_AUTOCLICK_COMMON_AUTOCLICK_CONTROLLER_COMMON_H