Lock rotation when screen is manually rotated.

ash/wm/maximize_mode/maximize_mode_controller.h

Index: ash/wm/maximize_mode/maximize_mode_controller.h
diff --git a/ash/wm/maximize_mode/maximize_mode_controller.h b/ash/wm/maximize_mode/maximize_mode_controller.h
index 9810d4d5bfc93019de796aec98baeb65790b1d66..fa93d732be812d4a0b05d2b0a49cd09f84b6f94c 100644
--- a/ash/wm/maximize_mode/maximize_mode_controller.h
+++ b/ash/wm/maximize_mode/maximize_mode_controller.h
@@ -57,6 +57,14 @@ class ASH_EXPORT MaximizeModeController : public AccelerometerObserver {
   // 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 targeter controller which traps mouse and keyboard events while
   // maximize mode is engaged.
   scoped_ptr<MaximizeModeEventBlocker> event_blocker_;