Get drag and drop working on Win Ash.

ui/base/dragdrop/os_exchange_data_provider_aura.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/os_exchange_data_provider_aura.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "net/base/net_util.h"
 #include "ui/base/clipboard/clipboard.h"
@@ skipping 144 matching lines @@
     return false;
   *html = html_;
   *base_url = base_url_;
   return true;
 }
 
 bool OSExchangeDataProviderAura::HasHtml() const {
   return ((formats_ & OSExchangeData::HTML) != 0);
 }
 
+void OSExchangeDataProviderAura::SetDragImage(
+    const gfx::ImageSkia& image,
+    const gfx::Vector2d& cursor_offset) {
+  drag_image_ = image;
+  drag_image_offset_ = cursor_offset;
+}
+
+const gfx::ImageSkia& OSExchangeDataProviderAura::GetDragImage() const {
+  return drag_image_;
+}
+
+const gfx::Vector2d& OSExchangeDataProviderAura::GetDragImageOffset() const {
+  return drag_image_offset_;
+}
+
 bool OSExchangeDataProviderAura::GetPlainTextURL(GURL* url) const {
   if ((formats_ & OSExchangeData::STRING) == 0)
     return false;
 
   GURL test_url(string_);
   if (!test_url.is_valid())
     return false;
 
   if (url)
     *url = test_url;
@@ skipping 12 matching lines @@
 OSExchangeData::CustomFormat
 OSExchangeData::RegisterCustomFormat(const std::string& type) {
   // On Aura you probably want to just use the Clipboard::Get*FormatType APIs
   // instead.  But we can also dynamically generate new CustomFormat objects
   // here too if really necessary.
   return Clipboard::FormatType::Deserialize(type);
 }
 
 
 }  // namespace ui