Get drag and drop working on Win Ash.

ui/base/dragdrop/os_exchange_data_provider_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_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_WIN_H_
 #define UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_WIN_H_
 
 #include <objidl.h>
 #include <shlobj.h>
 #include <string>
 
 // Win8 SDK compatibility, see http://goo.gl/fufvl for more information.
 // "Note: This interface has been renamed IDataObjectAsyncCapability."
 // If we're building on pre-8 we define it to its old name. It's documented as
 // being binary compatible.
 #ifndef __IDataObjectAsyncCapability_FWD_DEFINED__
 #define IDataObjectAsyncCapability IAsyncOperation
 #endif
 
 #include "base/win/scoped_comptr.h"
 #include "ui/base/dragdrop/os_exchange_data.h"
 #include "ui/base/ui_export.h"
+#include "ui/gfx/image/image_skia.h"
+#include "ui/gfx/vector2d.h"
 
 namespace ui {
 
 class DataObjectImpl : public DownloadFileObserver,
                        public IDataObject,
                        public IDataObjectAsyncCapability {
  public:
   class Observer {
    public:
     virtual void OnWaitForData() = 0;
@@ skipping 146 matching lines @@
                                std::string* file_contents) const;
   virtual bool GetHtml(string16* html, GURL* base_url) const;
   virtual bool HasString() const;
   virtual bool HasURL() const;
   virtual bool HasFile() const;
   virtual bool HasFileContents() const;
   virtual bool HasHtml() const;
   virtual bool HasCustomFormat(OSExchangeData::CustomFormat format) const;
   virtual void SetDownloadFileInfo(
       const OSExchangeData::DownloadFileInfo& download_info);
+#if defined(USE_AURA)
+  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;
+#endif
 
  private:
   scoped_refptr<DataObjectImpl> data_;
   base::win::ScopedComPtr<IDataObject> source_object_;
 
+#if defined(USE_AURA)
+  // Drag image and offset data. Only used for Ash.
+  gfx::ImageSkia drag_image_;
+  gfx::Vector2d drag_image_offset_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(OSExchangeDataProviderWin);
 };
 
 }  // namespace ui
 
 #endif  // UI_BASE_DRAGDROP_OS_EXCHANGE_DATA_PROVIDER_WIN_H_