XMLHttpRequest#responseText should use a rope

Source/core/inspector/InspectorResourceAgent.cpp

 /*
  * 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:
  *
  *     * 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 404 matching lines @@
     for (HTTPHeaderMap::const_iterator it = headers.begin(); it!= end; ++it)
         xhrReplayData->addHeader(it->key, it->value);
     m_pendingXHRReplayData.set(client, xhrReplayData);
 }
 
 void InspectorResourceAgent::didFailXHRLoading(ThreadableLoaderClient* client)
 {
     m_pendingXHRReplayData.remove(client);
 }
 
-void InspectorResourceAgent::didFinishXHRLoading(ThreadableLoaderClient* client, unsigned long identifier, const String& sourceString, const String&, const String&, unsigned)
+void InspectorResourceAgent::didFinishXHRLoading(ThreadableLoaderClient* client, unsigned long identifier, ScriptString sourceString, const String&, const String&, unsigned)
 {
     // For Asynchronous XHRs, the inspector can grab the data directly off of the CachedResource. For sync XHRs, we need to
     // provide the data here, since no CachedResource was involved.
     if (m_loadingXHRSynchronously)
-        m_resourcesData->setResourceContent(IdentifiersFactory::requestId(identifier), sourceString);
+        m_resourcesData->setResourceContent(IdentifiersFactory::requestId(identifier), sourceString.toString());
     m_pendingXHRReplayData.remove(client);
 }
 
 void InspectorResourceAgent::didReceiveXHRResponse(unsigned long identifier)
 {
     m_resourcesData->setResourceType(IdentifiersFactory::requestId(identifier), InspectorPageAgent::XHRResource);
 }
 
 void InspectorResourceAgent::willLoadXHRSynchronously()
 {
@@ skipping 307 matching lines @@
     , m_client(client)
     , m_frontend(0)
     , m_resourcesData(adoptPtr(new NetworkResourcesData()))
     , m_loadingXHRSynchronously(false)
     , m_isRecalculatingStyle(false)
 {
 }
 
 } // namespace WebCore