DO NOT COMMIT: Experimental removal of encoded image data

third_party/WebKit/Source/core/fetch/ResourceFetcher.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
@@ skipping 740 matching lines @@
     if (type != Resource::Raw) {
         if (!context().isLoadComplete() && m_validatedURLs.contains(existingResource->url()))
             return Use;
         if (existingResource->isLoading())
             return Use;
     }
 
     if (request.getCachePolicy() == WebCachePolicy::BypassingCache)
         return Reload;
 
+    if (request.getCachePolicy() == WebCachePolicy::ReturnCacheDataElseLoad)
+        return Reload;
+
     // CachePolicyReload always reloads
     if (cachePolicy == CachePolicyReload) {
         RESOURCE_LOADING_DVLOG(1) << "ResourceFetcher::determineRevalidationPolicy reloading due to CachePolicyReload.";
         return Reload;
     }
 
     // We'll try to reload the resource if it failed last time.
     if (existingResource->errorOccurred()) {
         RESOURCE_LOADING_DVLOG(1) << "ResourceFetcher::determineRevalidationPolicye reloading due to resource being in the error state";
         return Reload;
@@ skipping 552 matching lines @@
     visitor->trace(m_context);
     visitor->trace(m_archive);
     visitor->trace(m_loaders);
     visitor->trace(m_nonBlockingLoaders);
     visitor->trace(m_documentResources);
     visitor->trace(m_preloads);
     visitor->trace(m_resourceTimingInfoMap);
 }
 
 } // namespace blink