Prepopulate the memoryCache with data:uri images.

Source/core/loader/cache/CachedRawResource.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 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
     version 2 of the License, or (at your option) any later version.
@@ skipping 14 matching lines @@
 
 #include "core/loader/cache/CachedResource.h"
 #include "core/loader/cache/CachedResourceClient.h"
 
 namespace WebCore {
 class CachedRawResourceCallback;
 class CachedRawResourceClient;
 
 class CachedRawResource : public CachedResource {
 public:
-    CachedRawResource(ResourceRequest&, Type);
+    CachedRawResource(const ResourceRequest&, Type);
 
     // FIXME: AssociatedURLLoader shouldn't be a DocumentThreadableLoader and therefore shouldn't
     // use CachedRawResource. However, it is, and it needs to be able to defer loading.
     // This can be fixed by splitting CORS preflighting out of DocumentThreacableLoader.
     virtual void setDefersLoading(bool);
 
     virtual void setDataBufferingPolicy(DataBufferingPolicy);
 
     void clear();
 
@@ skipping 37 matching lines @@
     virtual void dataSent(CachedResource*, unsigned long long /* bytesSent */, unsigned long long /* totalBytesToBeSent */) { }
     virtual void responseReceived(CachedResource*, const ResourceResponse&) { }
     virtual void dataReceived(CachedResource*, const char* /* data */, int /* length */) { }
     virtual void redirectReceived(CachedResource*, ResourceRequest&, const ResourceResponse&) { }
     virtual void dataDownloaded(CachedResource*, int) { }
 };
 
 }
 
 #endif // CachedRawResource_h