Adds a NonClientFrameView for generic toplevel windows.

ui/aura/desktop_host.h

 // Copyright (c) 2011 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 UI_AURA_DESKTOP_HOST_H_
 #define UI_AURA_DESKTOP_HOST_H_
 #pragma once
 
 #include "base/message_loop.h"
+#include "ui/aura/cursor.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace gfx {
 class Rect;
 class Size;
 }
 
 namespace aura {
 
 class Desktop;
@@ skipping 13 matching lines @@
 
   // Returns the accelerated widget.
   virtual gfx::AcceleratedWidget GetAcceleratedWidget() = 0;
 
   // Shows the DesktopHost.
   virtual void Show() = 0;
 
   // Gets/Sets the size of the DesktopHost.
   virtual gfx::Size GetSize() = 0;
   virtual void SetSize(const gfx::Size& size) = 0;
+
+  // Sets the currently displayed cursor.
+  virtual void SetCursor(CursorType cursor_type) = 0;
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_DESKTOP_HOST_H_