Implement ui_controls for aura

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"
@@ skipping 32 matching lines @@
   // Shows the DesktopHost.
   virtual void Show() = 0;
 
   // Toggles the host's full screen state.
   virtual void ToggleFullScreen() = 0;
 
   // Gets/Sets the size of the DesktopHost.
   virtual gfx::Size GetSize() const = 0;
   virtual void SetSize(const gfx::Size& size) = 0;
 
+  // Returns the location of the desktop on native screen.
+  virtual gfx::Point GetLocationOnNativeScreen() const = 0;
+
   // Sets the currently displayed cursor.
   virtual void SetCursor(gfx::NativeCursor cursor) = 0;
 
   // Queries the mouse's current position relative to the host window.
   // The position is constrained within the host window.
   // You should probably call Desktop::last_mouse_location() instead; this
   // method can be expensive.
   virtual gfx::Point QueryMouseLocation() = 0;
 
   // Posts |native_event| to the platform's event queue.
   virtual void PostNativeEvent(const base::NativeEvent& native_event) = 0;
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_DESKTOP_HOST_H_