Rename RootWindowHost to WindowTreeHost

ash/display/display_controller.h

 // Copyright (c) 2012 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_DISPLAY_DISPLAY_CONTROLLER_H_
 #define ASH_DISPLAY_DISPLAY_CONTROLLER_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 144 matching lines @@
   const gfx::Display& GetDisplayMatching(
       const gfx::Rect& match_rect)const;
 
   // aura::DisplayObserver overrides:
   virtual void OnDisplayBoundsChanged(
       const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayAdded(const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayRemoved(const gfx::Display& display) OVERRIDE;
 
   // RootWindowObserver overrides:
-  virtual void OnRootWindowHostResized(const aura::RootWindow* root) OVERRIDE;
+  virtual void OnWindowTreeHostResized(const aura::RootWindow* root) OVERRIDE;
 
   // aura::DisplayManager::Delegate overrides:
   virtual void CreateOrUpdateNonDesktopDisplay(
       const internal::DisplayInfo& info) OVERRIDE;
   virtual void CloseNonDesktopDisplay() OVERRIDE;
   virtual void PreDisplayConfigurationChange(bool clear_focus) OVERRIDE;
   virtual void PostDisplayConfigurationChange() OVERRIDE;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(DisplayControllerTest, BoundsUpdated);
@@ skipping 48 matching lines @@
   // restore the cursor location when display configuration
   // changed.
   gfx::Point cursor_location_in_native_coords_for_restore_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_CONTROLLER_H_