Move root_window.* to window_event_dispatcher.*

ui/views/drag_utils.cc

 // 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.
 
 #include "ui/views/drag_utils.h"
 
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/size.h"
 
 #if defined(USE_AURA)
 #include "ui/aura/client/drag_drop_client.h"
-#include "ui/aura/root_window.h"
 #include "ui/aura/window.h"
+#include "ui/aura/window_event_dispatcher.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/screen.h"
 #include "ui/views/widget/widget.h"
 #elif defined(OS_WIN)
 #include "ui/base/dragdrop/drag_drop_types.h"
 #include "ui/base/dragdrop/drag_source_win.h"
 #include "ui/base/dragdrop/os_exchange_data_provider_win.h"
 #else
 #error
 #endif
@@ skipping 39 matching lines @@
 #endif
 }
 
 gfx::Canvas* GetCanvasForDragImage(views::Widget* widget,
                                    const gfx::Size& canvas_size) {
   float device_scale = GetDeviceScaleForNativeView(widget);
   return new gfx::Canvas(canvas_size, device_scale, false);
 }
 
 }  // namespace views