[XHR] Move the code to clear variables to internalAbort()

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.
@@ skipping 183 matching lines @@
     void setRequestHeaderInternal(const AtomicString& name, const AtomicString& value);
 
     void trackProgress(int dataLength);
     // Changes m_state and dispatches a readyStateChange event if new m_state
     // value is different from last one.
     void changeState(State newState);
     void dispatchReadyStateChangeEvent();
 
     // Clears variables used only while the resource is being loaded.
     void clearVariablesForLoading();
-    // Returns false iff reentry happened and a new load is started.
-    bool internalAbort();
+    void internalAbort();
+    // Detaches m_loader and calls cancel() on it. Returns false iff reentry
+    // happened and a new load is started.
+    bool cancelLoader();
     // Clears variables holding response header and body data.
     void clearResponse();
     void clearRequest();
 
     void createRequest(PassRefPtr<FormData>, ExceptionState&);
 
     // Dispatches a response ProgressEvent.
     void dispatchProgressEvent(const AtomicString&, long long, long long);
     // Dispatches a response ProgressEvent using values sampled from
     // m_receivedLength and m_response.
@@ skipping 66 matching lines @@
     bool m_parsedResponse;
     bool m_error;
     bool m_uploadEventsAllowed;
     bool m_uploadComplete;
     bool m_sameOriginRequest;
 };
 
 } // namespace blink
 
 #endif // XMLHttpRequest_h