Move SubstituteData and UniqueIdentifier to core/fetch/ from core/loader/

Source/core/loader/DocumentLoader.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 15 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef DocumentLoader_h
 #define DocumentLoader_h
 
 #include "core/fetch/RawResource.h"
 #include "core/fetch/ResourceLoaderOptions.h"
 #include "core/fetch/ResourcePtr.h"
+#include "core/fetch/SubstituteData.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/loader/DocumentLoadTiming.h"
 #include "core/loader/DocumentWriter.h"
 #include "core/loader/FrameLoaderTypes.h"
 #include "core/loader/NavigationPolicy.h"
-#include "core/loader/SubstituteData.h"
 #include "platform/network/ResourceError.h"
 #include "platform/network/ResourceRequest.h"
 #include "platform/network/ResourceResponse.h"
 #include "wtf/HashSet.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
     class ApplicationCacheHost;
     class ArchiveResourceCollection;
     class ResourceFetcher;
@@ skipping 153 matching lines @@
         double m_timeOfLastDataReceived;
 
         friend class ApplicationCacheHost;  // for substitute resource delivery
         OwnPtrWillBePersistent<ApplicationCacheHost> m_applicationCacheHost;
 
         RefPtr<ContentSecurityPolicy> m_contentSecurityPolicy;
     };
 }
 
 #endif // DocumentLoader_h