Animated WebP: Optimize decoding in case of seeking

Source/core/platform/graphics/chromium/test/MockImageDecoder.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
@@ skipping 16 matching lines @@
 
 #include "core/platform/image-decoders/ImageDecoder.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
 class MockImageDecoderClient {
 public:
     virtual void decoderBeingDestroyed() = 0;
     virtual void frameBufferRequested() = 0;
-    virtual ImageFrame::FrameStatus frameStatus() = 0;
+    virtual ImageFrame::Status frameStatus() = 0;
     virtual size_t frameCount() = 0;
     virtual int repetitionCount() const = 0;
     virtual float frameDuration() const = 0;
 };
 
 class MockImageDecoder : public ImageDecoder {
 public:
     static PassOwnPtr<MockImageDecoder> create(MockImageDecoderClient* client) { return adoptPtr(new MockImageDecoder(client)); }
 
     MockImageDecoder(MockImageDecoderClient* client)
@@ skipping 49 matching lines @@
         return m_client->frameDuration();
     }
 
 private:
     MockImageDecoderClient* m_client;
 };
 
 } // namespace WebCore
 
 #endif // MockImageDecoder_h