Phase II Step 3: Reload LoFi/placeholder images via new ImageResource

third_party/WebKit/Source/platform/loader/fetch/ResourceLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2007 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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 398 matching lines @@
 
 void ResourceLoader::didFinishLoadingFirstPartInMultipart() {
   network_instrumentation::endResourceLoad(
       m_resource->identifier(),
       network_instrumentation::RequestOutcome::Success);
 
   m_fetcher->handleLoaderFinish(m_resource.get(), 0,
                                 ResourceFetcher::DidFinishFirstPartInMultipart);
 }
 
+void ResourceLoader::reloadIfLoFiOrPlaceholderImage(Resource* resource) {
+  resource->reloadIfLoFiOrPlaceholderImage(m_fetcher.get(),
+                                           Resource::kReloadIfNeeded);
+}
+
 void ResourceLoader::didFinishLoading(double finishTime,
                                       int64_t encodedDataLength,
                                       int64_t encodedBodyLength) {
   m_resource->setEncodedDataLength(encodedDataLength);
   m_resource->addToEncodedBodyLength(encodedBodyLength);
 
   m_loader.reset();
 
   network_instrumentation::endResourceLoad(
       m_resource->identifier(),
@@ skipping 90 matching lines @@
     return;
 
   // Don't activate if cache policy is explicitly set.
   if (request.getCachePolicy() != WebCachePolicy::UseProtocolCachePolicy)
     return;
 
   m_isCacheAwareLoadingActivated = true;
 }
 
 }  // namespace blink