Use standardized and extendable accelerometer update type.

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_controller.h"
@@ skipping 91 matching lines @@
   void AddWindow(aura::Window* window);
 
   // TODO(jonross): move this into the destructor. Currently separated as
   // ShellOberver notifies of maximize mode ending, and the observers end up
   // attempting to access MaximizeModeController via the Shell. If done in
   // destructor the controller is null, and the observers segfault.
   // Shuts down down the MaximizeModeWindowManager and notifies all observers.
   void Shutdown();
 
   // AccelerometerObserver:
-  virtual void OnAccelerometerUpdated(const gfx::Vector3dF& base,
-                                      const gfx::Vector3dF& lid) OVERRIDE;
+  virtual void OnAccelerometerUpdated(
+      const ui::AccelerometerUpdate& update) OVERRIDE;
 
   // ShellObserver:
   virtual void OnAppTerminating() OVERRIDE;
   virtual void OnMaximizeModeStarted() OVERRIDE;
   virtual void OnMaximizeModeEnded() OVERRIDE;
 
   // DisplayController::Observer:
   virtual void OnDisplayConfigurationChanged() OVERRIDE;
 
 #if defined(OS_CHROMEOS)
@@ skipping 96 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_