Rename Desktop->RootWindow.

ui/aura/root_window_observer.h

Index: ui/aura/root_window_observer.h
===================================================================
--- ui/aura/root_window_observer.h	(revision 113260)
+++ ui/aura/root_window_observer.h	(working copy)
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef UI_AURA_DESKTOP_OBSERVER_H_
-#define UI_AURA_DESKTOP_OBSERVER_H_
+#ifndef UI_AURA_ROOT_WINDOW_OBSERVER_H_
+#define UI_AURA_ROOT_WINDOW_OBSERVER_H_
 #pragma once
 
 #include "ui/aura/aura_export.h"
@@ -16,10 +16,10 @@
 
 class Window;
 
-class AURA_EXPORT DesktopObserver {
+class AURA_EXPORT RootWindowObserver {
  public:
-  // Invoked after the desktop is resized.
-  virtual void OnDesktopResized(const gfx::Size& new_size) {}
+  // Invoked after the RootWindowObserver is resized.
+  virtual void OnRootWindowResized(const gfx::Size& new_size) {}
 
   // Invoked when a new window is initialized.
   virtual void OnWindowInitialized(Window* window) {}
@@ -29,9 +29,9 @@
   virtual void OnActiveWindowChanged(Window* active) {}
 
  protected:
-  virtual ~DesktopObserver() {}
+  virtual ~RootWindowObserver() {}
 };
 
 }  // namespace aura
 
-#endif  // UI_AURA_DESKTOP_OBSERVER_H_
+#endif  // UI_AURA_ROOT_WINDOW_OBSERVER_H_