Get drag and drop working on Win Ash.

ui/base/dragdrop/os_exchange_data_provider_aura.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_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_AURA_H_
 #define UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_AURA_H_
 
 #include <map>
 
 #include "base/file_path.h"
@@ skipping 39 matching lines @@
   virtual bool GetFileContents(FilePath* filename,
                                std::string* file_contents) const OVERRIDE;
   virtual bool HasFileContents() const OVERRIDE;
   virtual void SetDownloadFileInfo(
       const OSExchangeData::DownloadFileInfo& download) OVERRIDE;
 #endif
 
   virtual void SetHtml(const string16& html, const GURL& base_url) OVERRIDE;
   virtual bool GetHtml(string16* html, GURL* base_url) const OVERRIDE;
   virtual bool HasHtml() const OVERRIDE;
-
-  void set_drag_image(const gfx::ImageSkia& drag_image) {
-      drag_image_ = drag_image;
-  }
-
-  const gfx::ImageSkia& drag_image() const { return drag_image_; }
-  void set_drag_image_offset(const gfx::Vector2d& drag_image_offset) {
-    drag_image_offset_ = drag_image_offset;
-  }
-  const gfx::Vector2d& drag_image_offset() const { return drag_image_offset_; }
+  virtual void SetDragImage(const gfx::ImageSkia& image,
+                            const gfx::Vector2d& cursor_offset) OVERRIDE;
+  virtual const gfx::ImageSkia& GetDragImage() const OVERRIDE;
+  virtual const gfx::Vector2d& GetDragImageOffset() const OVERRIDE;
 
  private:
   typedef std::map<OSExchangeData::CustomFormat, Pickle>  PickleData;
 
   // Returns true if |formats_| contains a string format and the string can be
   // parsed as a URL.
   bool GetPlainTextURL(GURL* url) const;
 
   // Actual formats that have been set. See comment above |known_formats_|
   // for details.
@@ skipping 19 matching lines @@
   // For HTML format
   string16 html_;
   GURL base_url_;
 
   DISALLOW_COPY_AND_ASSIGN(OSExchangeDataProviderAura);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_AURA_H_