[WIP] off-main-thread loading

third_party/WebKit/Source/core/loader/resource/ImageResource.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) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
 
     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 118 matching lines @@
 
 class ImageResource::ImageResourceFactory : public ResourceFactory {
   STACK_ALLOCATED();
 
  public:
   ImageResourceFactory(const FetchRequest& fetchRequest)
       : ResourceFactory(Resource::Image), m_fetchRequest(&fetchRequest) {}
 
   Resource* create(const ResourceRequest& request,
                    const ResourceLoaderOptions& options,
-                   const String&) const override {
+                   const String&,
+                   FetchContext*) const override {
     return new ImageResource(request, options, ImageResourceContent::create(),
                              m_fetchRequest->placeholderImageRequestType() ==
                                  FetchRequest::AllowPlaceholder);
   }
 
  private:
   // Weak, unowned pointer. Must outlive |this|.
   const FetchRequest* m_fetchRequest;
 };
 
@@ skipping 441 matching lines @@
     //    reloading in Step 3 due to notifyObservers()'s
     //    schedulingReloadOrShouldReloadBrokenPlaceholder() check.
     // 3. reloadIfLoFiOrPlaceholderImage() is called via ResourceFetcher
     //    (a) via didFinishLoading() called in decodeError(), or
     //    (b) after returning ImageResource::updateImage().
     decodeError(allDataReceived);
   }
 }
 
 }  // namespace blink