Make aura::clients take Window instead of RootWindow

ui/views/widget/desktop_aura/desktop_drag_drop_client_win.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 UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_DRAG_DROP_CLIENT_WIN_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_DRAG_DROP_CLIENT_WIN_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "ui/aura/client/drag_drop_client.h"
 #include "ui/views/views_export.h"
 
 namespace ui {
 class DragSourceWin;
-class RootWindow;
 }
 
 namespace views {
 class DesktopDragDragSourceWin;
 class DesktopDropTargetWin;
 
 class VIEWS_EXPORT DesktopDragDropClientWin
     : public aura::client::DragDropClient {
  public:
-  DesktopDragDropClientWin(aura::RootWindow* root_window, HWND window);
+  DesktopDragDropClientWin(aura::Window* root_window, HWND window);
   virtual ~DesktopDragDropClientWin();
 
   // Overridden from aura::client::DragDropClient:
   virtual int StartDragAndDrop(
       const ui::OSExchangeData& data,
-      aura::RootWindow* root_window,
+      aura::Window* root_window,
       aura::Window* source_window,
       const gfx::Point& root_location,
       int operation,
       ui::DragDropTypes::DragEventSource source) OVERRIDE;
   virtual void DragUpdate(aura::Window* target,
                           const ui::LocatedEvent& event) OVERRIDE;
   virtual void Drop(aura::Window* target,
                     const ui::LocatedEvent& event) OVERRIDE;
   virtual void DragCancel() OVERRIDE;
   virtual bool IsDragDropInProgress() OVERRIDE;
 
   void OnNativeWidgetDestroying(HWND window);
 
  private:
   bool drag_drop_in_progress_;
 
   int drag_operation_;
 
   scoped_refptr<ui::DragSourceWin> drag_source_;
 
   scoped_refptr<DesktopDropTargetWin> drop_target_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopDragDropClientWin);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_DRAG_DROP_CLIENT_WIN_H_