Lock Rotation when screen is manually rotated

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 "base/macros.h"
@@ skipping 30 matching lines @@
  private:
   // Detect hinge rotation from |base| and |lid| accelerometers and
   // automatically start / stop maximize mode.
   void HandleHingeRotation(const gfx::Vector3dF& base,
                            const gfx::Vector3dF& lid);
 
   // Detect screen rotation from |lid| accelerometer and automatically rotate
   // screen.
   void HandleScreenRotation(const gfx::Vector3dF& lid);
 
+  // Enables MaximizeModeWindowManager, and determines the current state of
+  // rotation lock.
+  void EnterMaximizeMode();
+
+  // Removes MaximizeModeWindowManager and resets the display rotation if there
+  // is no rotation lock.
+  void LeaveMaximizeMode();
+
   // An event handler which traps mouse and keyboard events while maximize
   // mode is engaged.
   scoped_ptr<MaximizeModeEventBlocker> event_blocker_;
 
   // When true calls to OnAccelerometerUpdated will not rotate the display.
   bool rotation_locked_;
 
   DISALLOW_COPY_AND_ASSIGN(MaximizeModeController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_CONTROLLER_H_