Update the ResourceRequest in DocumentLoader after the embedder modified it

Source/core/fetch/RawResource.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 32 matching lines @@
 
     virtual bool canReuse(const ResourceRequest&) const;
 
 private:
     virtual void didAddClient(ResourceClient*);
     virtual void appendData(const char*, int) OVERRIDE;
 
     virtual bool shouldIgnoreHTTPStatusCodeErrors() const { return true; }
 
     virtual void willSendRequest(ResourceRequest&, const ResourceResponse&);
+    virtual void updateRequest(const ResourceRequest&);
     virtual void responseReceived(const ResourceResponse&);
     virtual void didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent);
     virtual void didDownloadData(int);
 
     struct RedirectPair {
     public:
         explicit RedirectPair(const ResourceRequest& request, const ResourceResponse& redirectResponse)
             : m_request(request)
             , m_redirectResponse(redirectResponse)
         {
@@ skipping 22 matching lines @@
 class RawResourceClient : public ResourceClient {
 public:
     virtual ~RawResourceClient() { }
     static ResourceClientType expectedType() { return RawResourceType; }
     virtual ResourceClientType resourceClientType() const { return expectedType(); }
 
     virtual void dataSent(Resource*, unsigned long long /* bytesSent */, unsigned long long /* totalBytesToBeSent */) { }
     virtual void responseReceived(Resource*, const ResourceResponse&) { }
     virtual void dataReceived(Resource*, const char* /* data */, int /* length */) { }
     virtual void redirectReceived(Resource*, ResourceRequest&, const ResourceResponse&) { }
+    virtual void updateRequest(Resource*, const ResourceRequest&) { }
     virtual void dataDownloaded(Resource*, int) { }
 };
 
 }
 
 #endif // RawResource_h