Rename RootWindowHost* to WindowTreeHost*

ash/wm/lock_state_controller.h

 // Copyright 2013 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_LOCK_STATE_CONTROLLER_H_
 #define ASH_WM_LOCK_STATE_CONTROLLER_H_
 
 #include "ash/ash_export.h"
 #include "ash/shell_observer.h"
 #include "ash/wm/lock_state_observer.h"
@@ skipping 180 matching lines @@
   // Called when ScreenLocker is ready to close, but not yet destroyed.
   // Can be used to display "hiding" animations on unlock.
   // |callback| will be called when all animations are done.
   void OnLockScreenHide(base::Closure& callback);
 
   // Sets up the callback that should be called once lock animation is finished.
   // Callback is guaranteed to be called once and then discarded.
   void SetLockScreenDisplayedCallback(const base::Closure& callback);
 
   // RootWindowObserver override:
-  virtual void OnRootWindowHostCloseRequested(
+  virtual void OnWindowTreeHostCloseRequested(
      const aura::RootWindow* root) OVERRIDE;
 
   // ShellObserver overrides:
   virtual void OnLoginStateChanged(user::LoginStatus status) OVERRIDE;
   virtual void OnAppTerminating() OVERRIDE;
   virtual void OnLockStateChanged(bool locked) OVERRIDE;
 
  private:
   friend class test::PowerButtonControllerTest;
   friend class test::LockStateControllerTest;
@@ skipping 107 matching lines @@
   base::OneShotTimer<LockStateController> real_shutdown_timer_;
 
   base::Closure lock_screen_displayed_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(LockStateController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_LOCK_STATE_CONTROLLER_H_