Remove preload support from the MemoryCache

sky/engine/web/WebCachedURLRequest.cpp

 /*
  * Copyright (C) 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 39 matching lines @@
     else
         m_resourceRequestWrapper->bind(m_private->resourceRequest());
     return *m_resourceRequestWrapper.get();
 }
 
 WebString WebCachedURLRequest::charset() const
 {
     return WebString(m_private->charset());
 }
 
-bool WebCachedURLRequest::forPreload() const
-{
-    return m_private->forPreload();
-}
-
 WebString WebCachedURLRequest::initiatorName() const
 {
     return WebString(m_private->options().initiatorInfo.name);
 }
 
 WebCachedURLRequest::WebCachedURLRequest(FetchRequest* request)
     : m_private(request)
 {
 }
 
 } // namespace blink