Added quick lock mechanism while in Touchview

ash/wm/maximize_mode/maximize_mode_controller.h

 // Copyright 2014 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_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_
 #define ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_
 
 #include "ash/accelerometer/accelerometer_observer.h"
 #include "ash/ash_export.h"
 #include "ash/display/display_manager.h"
@@ skipping 64 matching lines @@
   void EnterMaximizeMode();
 
   // Removes MaximizeModeWindowManager and resets the display rotation if there
   // is no rotation lock.
   void LeaveMaximizeMode();
 
   // An event targeter controller which traps mouse and keyboard events while
   // maximize mode is engaged.
   scoped_ptr<MaximizeModeEventBlocker> event_blocker_;
 
-  // An event handler used to detect screenshot actions while in maximize mode.
-  scoped_ptr<ui::EventHandler> event_handler_;
-
   // When true calls to OnAccelerometerUpdated will not rotate the display.
   bool rotation_locked_;
 
   // Whether we have ever seen accelerometer data.
   bool have_seen_accelerometer_data_;
 
   // True when the screen's orientation is being changed.
   bool in_set_screen_rotation_;
 
   // The rotation of the display set by the user. This rotation will be
   // restored upon exiting maximize mode.
   gfx::Display::Rotation user_rotation_;
 
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_