Removes usage of aura::Window from Node

mojo/services/view_manager/node_delegate.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 MOJO_SERVICES_VIEW_MANAGER_NODE_DELEGATE_H_
 #define MOJO_SERVICES_VIEW_MANAGER_NODE_DELEGATE_H_
 
 #include "mojo/services/view_manager/view_manager_export.h"
 
 namespace gfx {
@@ skipping 13 matching lines @@
 
   // Invoked when the hierarchy has changed.
   virtual void OnNodeHierarchyChanged(const Node* node,
                                       const Node* new_parent,
                                       const Node* old_parent) = 0;
 
   virtual void OnNodeBoundsChanged(const Node* node,
                                    const gfx::Rect& old_bounds,
                                    const gfx::Rect& new_bounds) = 0;
 
+  virtual void OnNodeBitmapChanged(const Node* node) = 0;
+
  protected:
   virtual ~NodeDelegate() {}
 };
 
 }  // namespace service
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_VIEW_MANAGER_NODE_DELEGATE_H_