Take NativeImageSkia out behind the woodshed.

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 40 matching lines @@
 
     static PassOwnPtr<DeferredImageDecoder> createForTesting(PassOwnPtr<ImageDecoder>);
 
     static bool isLazyDecoded(const SkBitmap&);
 
     static void setEnabled(bool);
     static bool enabled();
 
     String filenameExtension() const;
 
-    PassRefPtr<NativeImageSkia> createFrameAtIndex(size_t);
+    bool createFrameAtIndex(size_t, SkBitmap*) WARN_UNUSED_RETURN;
 
     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);
@@ skipping 27 matching lines @@
     // Carries only frame state and other information. Does not carry bitmap.
     Vector<FrameData> m_frameData;
     RefPtr<ImageFrameGenerator> m_frameGenerator;
 
     static bool s_enabled;
 };
 
 } // namespace blink
 
 #endif