Reland "Move MemoryCache implementation details out of Resource"

Source/core/fetch/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 43 matching lines @@
 
 ImageResource::ImageResource(WebCore::Image* image)
     : Resource(ResourceRequest(""), Image)
     , m_image(image)
 {
     setStatus(Cached);
     setLoading(false);
     setCustomAcceptHeader();
 }
 
+ImageResource::ImageResource(const ResourceRequest& resourceRequest, WebCore::Image* image)
+    : Resource(resourceRequest, Image)
+    , m_image(image)
+{
+    setStatus(Cached);
+    setLoading(false);
+    setCustomAcceptHeader();
+}
+
 ImageResource::~ImageResource()
 {
     clearImage();
 }
 
 void ImageResource::load(ResourceFetcher* fetcher, const ResourceLoaderOptions& options)
 {
     if (!fetcher || fetcher->autoLoadImages())
         Resource::load(fetcher, options);
     else
@@ skipping 388 matching lines @@
 bool ImageResource::isAccessAllowed(SecurityOrigin* securityOrigin)
 {
     if (!image()->currentFrameHasSingleSecurityOrigin())
         return false;
     if (passesAccessControlCheck(securityOrigin))
         return true;
     return !securityOrigin->taintsCanvas(response().url());
 }
 
 } // namespace WebCore