Remove support for multipart/x-mixed-replace

Source/core/loader/FrameLoader.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 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:
  *
@@ skipping 73 matching lines @@
 
     Frame* frame() const { return m_frame; }
 
     HistoryController* history() const { return &m_history; }
     ResourceLoadNotifier* notifier() const { return &m_notifer; }
     SubframeLoader* subframeLoader() const { return &m_subframeLoader; }
     IconController* icon() const { return m_icon.get(); }
     MixedContentChecker* mixedContentChecker() const { return &m_mixedContentChecker; }
 
     void prepareForHistoryNavigation();
-    void setupForReplace();
 
     // FIXME: These are all functions which start loads. We have too many.
     void loadURLIntoChildFrame(const ResourceRequest&, Frame*);
     void loadFrameRequest(const FrameLoadRequest&, bool lockBackForwardList,  // Called by submitForm, calls loadPostRequest and loadURL.
         PassRefPtr<Event>, PassRefPtr<FormState>, ShouldSendReferrer);
 
     void load(const FrameLoadRequest&);
 
     unsigned long loadResourceSynchronously(const ResourceRequest&, StoredCredentials, ResourceError&, ResourceResponse&, Vector<char>& data);
 
@@ skipping 282 matching lines @@
 // the frame name references a frame different from the openerFrame, e.g. when it is
 // "_self" or "_parent".
 //
 // FIXME: Consider making this function part of an appropriate class (not FrameLoader)
 // and moving it to a more appropriate location.
 Frame* createWindow(Frame* openerFrame, Frame* lookupFrame, const FrameLoadRequest&, const WindowFeatures&, bool& created);
 
 } // namespace WebCore
 
 #endif // FrameLoader_h