ui: Remove SkCanvas methods from drag utils.

ui/base/dragdrop/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/base/dragdrop/drag_utils.h"
 
 #include "ui/base/dragdrop/os_exchange_data.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/image/image_skia.h"
 
 namespace drag_utils {
 
-void SetDragImageOnDataObject(const gfx::Canvas& canvas,
-                              const gfx::Vector2d& cursor_offset,
-                              ui::OSExchangeData* data_object) {
-  gfx::ImageSkia image = gfx::ImageSkia(canvas.ExtractImageRep());
-  SetDragImageOnDataObject(image, cursor_offset, data_object);
-}
-
 #if !defined(OS_WIN)
 void SetDragImageOnDataObject(const gfx::ImageSkia& image_skia,
                               const gfx::Vector2d& cursor_offset,
                               ui::OSExchangeData* data_object) {
   data_object->provider().SetDragImage(image_skia, cursor_offset);
 }
 #endif
 
 }  // namespace drag_utils