Make revalidation to fail when received a redirect response

third_party/WebKit/Source/core/fetch/Resource.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
@@ skipping 534 matching lines @@
 }
 
 void Resource::setRevalidatingRequest(const ResourceRequest& request)
 {
     m_revalidatingRequest = request;
     m_status = NotStarted;
 }
 
 void Resource::willFollowRedirect(ResourceRequest& newRequest, const ResourceResponse& redirectResponse)
 {
+    if (!m_revalidatingRequest.isNull()) {
+        revalidationFailed();

[Nate Chapin, 2016/05/27 17:10:43]

Would m_redirectChain.clear() suffice?

[hiroshige, 2016/05/31 06:24:46]

No.
Just clearing |m_redirectChain| doesn't prevent |m_redirectChain.clear()| in
responceReceived() after  Resource::willFollowRedirect() is called during
revalidation.

+    }

[kinuko, 2016/05/27 14:25:01]

nit: no { } for consistency

[hiroshige, 2016/05/31 13:09:31]

Done.

     newRequest.setAllowStoredCredentials(m_options.allowCredentials == AllowStoredCredentials);
     m_redirectChain.append(RedirectPair(newRequest, redirectResponse));
 }
 
 void Resource::setResponse(const ResourceResponse& response)
 {
     m_response = response;
     if (m_response.wasFetchedViaServiceWorker())
         m_cacheHandler = ServiceWorkerResponseCachedMetadataHandler::create(this, m_fetcherSecurityOrigin.get());
 }
@@ skipping 557 matching lines @@
     case Resource::Media:
         return "Media";
     case Resource::Manifest:
         return "Manifest";
     }
     ASSERT_NOT_REACHED();
     return "Unknown";
 }
 
 } // namespace blink