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

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

 /*
  * Copyright (C) 2005, 2006, 2011 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
@@ skipping 90 matching lines @@
   void didDownloadData(int, int) override;
   void didFinishLoading(double finishTime,
                         int64_t encodedDataLength,
                         int64_t encodedBodyLength) override;
   void didFail(const WebURLError&,
                int64_t encodedDataLength,
                int64_t encodedBodyLength) override;
   void handleError(const ResourceError&);
 
   void didFinishLoadingFirstPartInMultipart();
+  void reloadIfLoFiOrPlaceholderImage(Resource*);
 
  private:
   // Assumes ResourceFetcher and Resource are non-null.
   ResourceLoader(ResourceFetcher*, Resource*);
 
   // This method is currently only used for service worker fallback request and
   // cache-aware loading, other users should be careful not to break
   // ResourceLoader state.
   void restart(const ResourceRequest&);
 
   FetchContext& context() const;
   ResourceRequestBlockedReason canAccessResponse(Resource*,
                                                  const ResourceResponse&) const;
 
   void cancelForRedirectAccessCheckError(const KURL&,
                                          ResourceRequestBlockedReason);
   void requestSynchronously(const ResourceRequest&);
   void dispose();
 
   std::unique_ptr<WebURLLoader> m_loader;
   Member<ResourceFetcher> m_fetcher;
   Member<Resource> m_resource;
   bool m_isCacheAwareLoadingActivated;
 };
 
 }  // namespace blink
 
 #endif