Implement DeviceMotionEvent API

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/ash_export.h"
 #include "ash/shell_observer.h"
 #include "base/macros.h"
@@ skipping 65 matching lines @@
   void AddWindow(aura::Window* window);
 
   // ShellObserver:
   void OnAppTerminating() override;
   void OnMaximizeModeStarted() override;
   void OnMaximizeModeEnded() override;
 
 #if defined(OS_CHROMEOS)
   // chromeos::AccelerometerReader::Observer:
   void OnAccelerometerUpdated(
-      const chromeos::AccelerometerUpdate& update) override;
+      scoped_refptr<const chromeos::AccelerometerUpdate> update) override;
 
   // PowerManagerClient::Observer:
   void LidEventReceived(bool open, const base::TimeTicks& time) override;
   void SuspendImminent() override;
   void SuspendDone(const base::TimeDelta& sleep_duration) override;
 #endif  // OS_CHROMEOS
 
  private:
   friend class MaximizeModeControllerTest;
   friend class MaximizeModeWindowManagerTest;
   friend class test::MultiUserWindowManagerChromeOSTest;
   friend class test::VirtualKeyboardControllerTest;
 
   // Used for recording metrics for intervals of time spent in
   // and out of TouchView.
   enum TouchViewIntervalType {
     TOUCH_VIEW_INTERVAL_INACTIVE,
     TOUCH_VIEW_INTERVAL_ACTIVE
   };
 
   // Set the TickClock. This is only to be used by tests that need to
   // artificially and deterministically control the current time.
   void SetTickClockForTest(scoped_ptr<base::TickClock> tick_clock);
 
 #if defined(OS_CHROMEOS)
   // Detect hinge rotation from base and lid accelerometers and automatically
   // start / stop maximize mode.
-  void HandleHingeRotation(const chromeos::AccelerometerUpdate& update);
+  void HandleHingeRotation(
+      scoped_refptr<const chromeos::AccelerometerUpdate> update);
 #endif
 
   // Returns true if the lid was recently opened.
   bool WasLidOpenedRecently() const;
 
   // Enables MaximizeModeWindowManager, and determines the current state of
   // rotation lock.
   void EnterMaximizeMode();
 
   // Removes MaximizeModeWindowManager and resets the display rotation if there
@@ skipping 39 matching lines @@
 
   // Tracks when the lid is closed. Used to prevent entering maximize mode.
   bool lid_is_closed_;
 
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_