ImageDocumentParser should stop sending data to ImageResource once decoding fails.

third_party/WebKit/Source/core/html/ImageDocument.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple 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 126 matching lines @@
     if (!length)
         return;
 
     LocalFrame* frame = document()->frame();
     Settings* settings = frame->settings();
     if (!frame->loader().client()->allowImage(!settings || settings->imagesEnabled(), document()->url()))
         return;
 
     if (document()->cachedImage()) {
         RELEASE_ASSERT(length <= std::numeric_limits<unsigned>::max());
-        document()->cachedImage()->appendData(data, length);
+        // If decoding has already failed, there's no point in sending additional data to the ImageResource.
+        if (document()->cachedImage()->getStatus() != Resource::DecodeError)
+            document()->cachedImage()->appendData(data, length);
     }
 
     if (!isDetached())
         document()->imageUpdated();
 }
 
 void ImageDocumentParser::finish()
 {
     if (!isStopped() && document()->imageElement() && document()->cachedImage()) {
         ImageResource* cachedImage = document()->cachedImage();
@@ skipping 282 matching lines @@
 }
 
 bool ImageEventListener::operator==(const EventListener& listener) const
 {
     if (const ImageEventListener* imageEventListener = ImageEventListener::cast(&listener))
         return m_doc == imageEventListener->m_doc;
     return false;
 }
 
 } // namespace blink