[Resource Timing] Expose redirect timing information

Source/core/loader/ResourceLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2007 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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 313 matching lines @@
     ASSERT(!request.isNull());
     if (!redirectResponse.isNull()) {
         if (!m_documentLoader->cachedResourceLoader()->canRequest(m_resource->type(), request.url())) {
             cancel();
             return;
         }
         if (m_resource->type() == CachedResource::ImageResource && m_documentLoader->cachedResourceLoader()->shouldDeferImageLoad(request.url())) {
             cancel();
             return;
         }
+        m_documentLoader->cachedResourceLoader()->redirectReceived(m_resource, redirectResponse);
         m_resource->willSendRequest(request, redirectResponse);
     }
 
     if (request.isNull() || reachedTerminalState())
         return;
 
     // We need a resource identifier for all requests, even if FrameLoader is never going to see it (such as with CORS preflight requests).
     bool createdResourceIdentifier = false;
     if (!m_identifier) {
         m_identifier = m_frame->page()->progress()->createUniqueIdentifier();
@@ skipping 195 matching lines @@
     info.addMember(m_request, "request");
     info.addMember(m_originalRequest, "originalRequest");
     info.addMember(m_deferredRequest, "deferredRequest");
     info.addMember(m_options, "options");
     info.addMember(m_resource, "resource");
     info.addMember(m_documentLoader, "documentLoader");
     info.addMember(m_requestCountTracker, "requestCountTracker");
 }
 
 }