DO NOT COMMIT: Experimental removal of encoded image data

third_party/WebKit/Source/platform/graphics/ImageSource.cpp

 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2007 Alp Toker <alp.toker@collabora.co.uk>
  * Copyright (C) 2008, 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.
@@ skipping 28 matching lines @@
 
 ImageSource::~ImageSource()
 {
 }
 
 size_t ImageSource::clearCacheExceptFrame(size_t clearExceptFrame)
 {
     return m_decoder ? m_decoder->clearCacheExceptFrame(clearExceptFrame) : 0;
 }
 
+bool ImageSource::clear()
+{
+    if (!m_decoder)
+        return false;
+    return m_decoder->clear();
+}
+
 PassRefPtr<SharedBuffer> ImageSource::data()
 {
     return m_decoder ? m_decoder->data() : nullptr;
 }
 
 bool ImageSource::setData(PassRefPtr<SharedBuffer> passData, bool allDataReceived)
 {
     RefPtr<SharedBuffer> data = passData;
 
     if (m_decoder) {
@@ skipping 93 matching lines @@
 {
     return m_decoder && m_decoder->frameIsCompleteAtIndex(index);
 }
 
 size_t ImageSource::frameBytesAtIndex(size_t index) const
 {
     return m_decoder ? m_decoder->frameBytesAtIndex(index) : 0;
 }
 
 } // namespace blink