Make sure dispatchFailLoad is triggered by stopLoading

Source/core/loader/DocumentLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 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 201 matching lines @@
 
 // Cancels the data source's pending loads.  Conceptually, a data source only loads
 // one document at a time, but one document may have many related resources.
 // stopLoading will stop all loads initiated by the data source,
 // but not loads initiated by child frames' data sources -- that's the WebFrame's job.
 void DocumentLoader::stopLoading()
 {
     RefPtrWillBeRawPtr<LocalFrame> protectFrame(m_frame.get());
     RefPtrWillBeRawPtr<DocumentLoader> protectLoader(this);
 
-    m_fetcher->stopFetching();
     if (isLoading())
         cancelMainResourceLoad(ResourceError::cancelledError(m_request.url()));
+    m_fetcher->stopFetching();
 }
 
 void DocumentLoader::commitIfReady()
 {
     if (!m_committed) {
         m_committed = true;
         frameLoader()->commitProvisionalLoad();
     }
 }
 
@@ skipping 584 matching lines @@
 // This is only called by FrameLoader::replaceDocumentWhileExecutingJavaScriptURL()
 void DocumentLoader::replaceDocumentWhileExecutingJavaScriptURL(const DocumentInit& init, const String& source, Document* ownerDocument)
 {
     m_writer = createWriterFor(ownerDocument, init, mimeType(), m_writer ? m_writer->encoding() : emptyAtom, true, ForceSynchronousParsing);
     if (!source.isNull())
         m_writer->appendReplacingData(source);
     endWriting(m_writer.get());
 }
 
 } // namespace blink