Remove duplication of encoded image data

third_party/WebKit/Source/core/clipboard/DataTransfer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 262 matching lines @@
     return 0;
 }
 
 static void writeImageToDataObject(DataObject* dataObject, Element* element, const KURL& url)
 {
     // Shove image data into a DataObject for use as a file
     ImageResource* cachedImage = getImageResource(element);
     if (!cachedImage || !cachedImage->getImage() || !cachedImage->isLoaded())
         return;
 
-    SharedBuffer* imageBuffer = cachedImage->getImage()->data();
+    RefPtr<SharedBuffer> imageBuffer = cachedImage->getImage()->data();
     if (!imageBuffer || !imageBuffer->size())
         return;
 
     String imageExtension = cachedImage->getImage()->filenameExtension();
     ASSERT(!imageExtension.isEmpty());
 
     // Determine the filename for the file contents of the image.
     String filename = cachedImage->response().suggestedFilename();
     if (filename.isEmpty())
         filename = url.lastPathComponent();
@@ skipping 216 matching lines @@
 }
 
 DEFINE_TRACE(DataTransfer)
 {
     visitor->trace(m_dataObject);
     visitor->trace(m_dragImage);
     visitor->trace(m_dragImageElement);
 }
 
 } // namespace blink