Remove duplication of encoded image data

third_party/WebKit/Source/platform/graphics/DeferredImageDecoder.h

 /*
  * Copyright (C) 2012 Google 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 39 matching lines @@
     static PassOwnPtr<DeferredImageDecoder> create(const SharedBuffer& data, ImageDecoder::AlphaOption, ImageDecoder::GammaAndColorProfileOption);
 
     static PassOwnPtr<DeferredImageDecoder> createForTesting(PassOwnPtr<ImageDecoder>);
 
     ~DeferredImageDecoder();
 
     String filenameExtension() const;
 
     PassRefPtr<SkImage> createFrameAtIndex(size_t);
 
+    bool hasData() const;
+    PassRefPtr<SharedBuffer> data();
     void setData(SharedBuffer& data, bool allDataReceived);
 
     bool isSizeAvailable();
     bool hasColorProfile() const;
     IntSize size() const;
     IntSize frameSizeAtIndex(size_t index) const;
     size_t frameCount();
     int repetitionCount() const;
     size_t clearCacheExceptFrame(size_t index);
     bool frameHasAlphaAtIndex(size_t index) const;
@@ skipping 27 matching lines @@
     bool m_canYUVDecode;
 
     // Caches frame state information.
     Vector<DeferredFrameData> m_frameData;
     RefPtr<ImageFrameGenerator> m_frameGenerator;
 };
 
 } // namespace blink
 
 #endif