XMLHttpRequest#responseText should use a rope

Source/core/xml/XMLHttpRequest.h

 /*
  *  Copyright (C) 2003, 2006, 2008 Apple Inc. All rights reserved.
  *  Copyright (C) 2005, 2006 Alexey Proskuryakov <ap@nypop.com>
  *  Copyright (C) 2011 Google Inc. All rights reserved.
  *  Copyright (C) 2012 Intel Corporation
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Lesser General Public License for more details.
  *
  *  You should have received a copy of the GNU Lesser General Public
  *  License along with this library; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
 #ifndef XMLHttpRequest_h
 #define XMLHttpRequest_h
 
+#include "bindings/v8/ScriptString.h"
 #include "bindings/v8/ScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/dom/EventListener.h"
 #include "core/dom/EventNames.h"
 #include "core/dom/EventTarget.h"
 #include "core/loader/ThreadableLoaderClient.h"
 #include "core/platform/network/FormData.h"
 #include "core/platform/network/ResourceResponse.h"
 #include "core/xml/XMLHttpRequestProgressEventThrottle.h"
 #include "weborigin/SecurityOrigin.h"
-#include <wtf/OwnPtr.h>
-#include <wtf/text/AtomicStringHash.h>
-#include <wtf/text/StringBuilder.h>
+#include "wtf/OwnPtr.h"
+#include "wtf/text/AtomicStringHash.h"
+#include "wtf/text/StringBuilder.h"
 
 namespace WebCore {
 
 class Blob;
 class Document;
 class DOMFormData;
 class ResourceRequest;
 class SecurityOrigin;
 class SharedBuffer;
 class TextResourceDecoder;
@@ skipping 49 matching lines @@
     void send(const String&, ExceptionCode&);
     void send(Blob*, ExceptionCode&);
     void send(DOMFormData*, ExceptionCode&);
     void send(ArrayBuffer*, ExceptionCode&);
     void send(ArrayBufferView*, ExceptionCode&);
     void abort();
     void setRequestHeader(const AtomicString& name, const String& value, ExceptionCode&);
     void overrideMimeType(const String& override);
     String getAllResponseHeaders(ExceptionCode&) const;
     String getResponseHeader(const AtomicString& name, ExceptionCode&) const;
-    String responseText(ExceptionCode&);
+    ScriptString responseText(ExceptionCode&);
     Document* responseXML(ExceptionCode&);
     Document* optionalResponseXML() const { return m_responseDocument.get(); }
     Blob* responseBlob(ExceptionCode&);
     Blob* optionalResponseBlob() const { return m_responseBlob.get(); }
 #if ENABLE(XHR_TIMEOUT)
     unsigned long timeout() const { return m_timeoutMilliseconds; }
     void setTimeout(unsigned long timeout, ExceptionCode&);
 #endif
 
     void sendForInspector(ExceptionCode&);
@@ skipping 91 matching lines @@
     RefPtr<Blob> m_responseBlob;
 
     RefPtr<ThreadableLoader> m_loader;
     State m_state;
 
     ResourceResponse m_response;
     String m_responseEncoding;
 
     RefPtr<TextResourceDecoder> m_decoder;
 
-    StringBuilder m_responseBuilder;
+    ScriptString m_responseText;
     mutable bool m_createdDocument;
     mutable RefPtr<Document> m_responseDocument;
     
     RefPtr<SharedBuffer> m_binaryResponseBuilder;
     mutable RefPtr<ArrayBuffer> m_responseArrayBuffer;
 
     bool m_error;
 
     bool m_uploadEventsAllowed;
     bool m_uploadComplete;
@@ skipping 14 matching lines @@
 
     // An enum corresponding to the allowed string values for the responseType attribute.
     ResponseTypeCode m_responseTypeCode;
     Timer<XMLHttpRequest> m_protectionTimer;
     RefPtr<SecurityOrigin> m_securityOrigin;
 };
 
 } // namespace WebCore
 
 #endif // XMLHttpRequest_h