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Source/core/platform/image-decoders/png/PNGImageDecoder.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  *
  * Portions are Copyright (C) 2001 mozilla.org
  *
  * Other contributors:
  *   Stuart Parmenter <stuart@mozilla.com>
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 229 matching lines @@
         return 0;
 
     if (m_frameBufferCache.isEmpty()) {
         m_frameBufferCache.resize(1);
         m_frameBufferCache[0].setPremultiplyAlpha(m_premultiplyAlpha);
     }
 
     ImageFrame& frame = m_frameBufferCache[0];
     if (frame.status() != ImageFrame::FrameComplete) {
         PlatformInstrumentation::willDecodeImage("PNG");
+        TRACE_EVENT1("webkit", "PNGImageDecoder::decode", "debug", debug(m_data.get()));
         decode(false);
         PlatformInstrumentation::didDecodeImage();
     }
     return &frame;
 }
 
 bool PNGImageDecoder::setFailed()
 {
     if (m_doNothingOnFailure)
         return false;
@@ skipping 261 matching lines @@
     // has failed.
     if (!m_reader->decode(*m_data, onlySize) && isAllDataReceived())
         setFailed();
     // If we're done decoding the image, we don't need the PNGImageReader
     // anymore.  (If we failed, |m_reader| has already been cleared.)
     else if (isComplete())
         m_reader.clear();
 }
 
 } // namespace WebCore