[Experiment] Animated image decoder benchmark tool

Source/platform/image-decoders/ImageDecoder.h

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) Research In Motion Limited 2009-2010. 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 131 matching lines @@
 
     // Whether or not the frame is fully received.
     virtual bool frameIsCompleteAtIndex(size_t) const;
 
     // Duration for displaying a frame in seconds. This method is used by animated images only.
     virtual float frameDurationAtIndex(size_t) const { return 0; }
 
     // Number of bytes in the decoded frame requested. Return 0 if not yet decoded.
     virtual unsigned frameBytesAtIndex(size_t) const;
 
+    virtual size_t countIndependentFrames() const;
+
+    virtual float countAverageDependentFrames() const;
+
+    virtual size_t countMaxDependentFrames() const;
+
     void setIgnoreGammaAndColorProfile(bool flag) { m_ignoreGammaAndColorProfile = flag; }
     bool ignoresGammaAndColorProfile() const { return m_ignoreGammaAndColorProfile; }
 
     ImageOrientation orientation() const { return m_orientation; }
 
     enum { iccColorProfileHeaderLength = 128 };
 
     static bool rgbColorProfile(const char* profileData, unsigned profileLength)
     {
         ASSERT_UNUSED(profileLength, profileLength >= iccColorProfileHeaderLength);
@@ skipping 134 matching lines @@
 
     IntSize m_size;
     bool m_sizeAvailable;
     bool m_isAllDataReceived;
     bool m_failed;
 };
 
 } // namespace WebCore
 
 #endif