Do not reload in ImageResource::fetch()

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

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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 78 matching lines @@
   // Whether a resource client for a preload should mark the preload as
   // referenced.
   enum PreloadReferencePolicy {
     MarkAsReferenced,
     DontMarkAsReferenced,
   };
 
   // Used by reloadIfLoFiOrPlaceholderImage().
   enum ReloadLoFiOrPlaceholderPolicy {
     kReloadIfNeeded,
-    kReloadAlwaysWithExistingCachePolicy,
     kReloadAlways,
   };
 
   virtual ~Resource();
 
   DECLARE_VIRTUAL_TRACE();
 
   virtual void setEncoding(const String&) {}
   virtual String encoding() const { return String(); }
   virtual void appendData(const char*, size_t);
@@ skipping 191 matching lines @@
   void setEncodedDataLength(int64_t value) {
     m_response.setEncodedDataLength(value);
   }
   void addToEncodedBodyLength(int value) {
     m_response.addToEncodedBodyLength(value);
   }
   void addToDecodedBodyLength(int value) {
     m_response.addToDecodedBodyLength(value);
   }
 
-  virtual bool canReuse(const ResourceRequest&) const { return true; }
+  virtual bool canReuse(const FetchRequest&) const { return true; }
 
   // If cache-aware loading is activated, this callback is called when the first
   // disk-cache-only request failed due to cache miss. After this callback,
   // cache-aware loading is deactivated and a reload with original request will
   // be triggered right away in ResourceLoader.
   virtual void willReloadAfterDiskCacheMiss() {}
 
   // TODO(shaochuan): This is for saving back the actual ResourceRequest sent
   // in ResourceFetcher::startLoad() for retry in cache-aware loading, remove
   // once ResourceRequest is not modified in startLoad(). crbug.com/632580
@@ skipping 180 matching lines @@
 };
 
 #define DEFINE_RESOURCE_TYPE_CASTS(typeName)                   \
   DEFINE_TYPE_CASTS(typeName##Resource, Resource, resource,    \
                     resource->getType() == Resource::typeName, \
                     resource.getType() == Resource::typeName);
 
 }  // namespace blink
 
 #endif