Remove resource type-specific fetching logic from ResourceFetcher

Source/core/loader/DocumentThreadableLoader.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013, Intel Corporation
  *
  * 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.
@@ skipping 567 matching lines @@
             resourceLoaderOptions.dataBufferingPolicy = BufferData;
 
         if (m_options.timeoutMilliseconds > 0)
             m_timeoutTimer.startOneShot(m_options.timeoutMilliseconds / 1000.0, FROM_HERE);
 
         FetchRequest newRequest(request, m_options.initiator, resourceLoaderOptions);
         if (m_options.crossOriginRequestPolicy == AllowCrossOriginRequests)
             newRequest.setOriginRestriction(FetchRequest::NoOriginRestriction);
         ASSERT(!resource());
         if (request.requestContext() == WebURLRequest::RequestContextVideo || request.requestContext() == WebURLRequest::RequestContextAudio)
-            setResource(m_document.fetcher()->fetchMedia(newRequest));
+            setResource(RawResource::fetchMedia(newRequest, m_document.fetcher()));
         else
-            setResource(m_document.fetcher()->fetchRawResource(newRequest));
+            setResource(RawResource::fetch(newRequest, m_document.fetcher()));
         if (resource() && resource()->loader()) {
             unsigned long identifier = resource()->identifier();
             InspectorInstrumentation::documentThreadableLoaderStartedLoadingForClient(&m_document, identifier, m_client);
         }
         return;
     }
 
     FetchRequest fetchRequest(request, m_options.initiator, resourceLoaderOptions);
     if (m_options.crossOriginRequestPolicy == AllowCrossOriginRequests)
         fetchRequest.setOriginRestriction(FetchRequest::NoOriginRestriction);
-    ResourcePtr<Resource> resource = m_document.fetcher()->fetchSynchronously(fetchRequest);
+    ResourcePtr<Resource> resource = RawResource::fetchSynchronously(fetchRequest, m_document.fetcher());
     ResourceResponse response = resource ? resource->response() : ResourceResponse();
     unsigned long identifier = resource ? resource->identifier() : std::numeric_limits<unsigned long>::max();
     ResourceError error = resource ? resource->resourceError() : ResourceError();
 
     InspectorInstrumentation::documentThreadableLoaderStartedLoadingForClient(&m_document, identifier, m_client);
 
     if (!resource) {
         m_client->didFail(error);
         return;
     }
@@ skipping 43 matching lines @@
         return DoNotAllowStoredCredentials;
     return m_resourceLoaderOptions.allowCredentials;
 }
 
 SecurityOrigin* DocumentThreadableLoader::securityOrigin() const
 {
     return m_securityOrigin ? m_securityOrigin.get() : m_document.securityOrigin();
 }
 
 } // namespace blink