Do not report Resource Timing for iframe navigations when restored from history

Source/core/loader/FrameFetchContext.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 545 matching lines @@
 {
     return m_document && m_document->pageDismissalEventBeingDispatched() != Document::NoDismissal;
 }
 
 bool FrameFetchContext::updateTimingInfoForIFrameNavigation(ResourceTimingInfo* info)
 {
     // <iframe>s should report the initial navigation requested by the parent document, but not subsequent navigations.
     // FIXME: Resource timing is broken when the parent is a remote frame.
     if (!frame()->deprecatedLocalOwner() || frame()->deprecatedLocalOwner()->loadedNonEmptyDocument())
         return false;
+    frame()->deprecatedLocalOwner()->didLoadNonEmptyDocument();
+    // Do not report iframe navigation that restored from history, since its
+    // location may have been changed after initial navigation.
+    if (frame()->loader().loadType() == FrameLoadTypeInitialHistoryLoad)
+        return false;
     info->setInitiatorType(frame()->deprecatedLocalOwner()->localName());
-    frame()->deprecatedLocalOwner()->didLoadNonEmptyDocument();
     return true;
 }
 
 void FrameFetchContext::sendImagePing(const KURL& url)
 {
     PingLoader::loadImage(frame(), url);
 }
 
 void FrameFetchContext::addConsoleMessage(const String& message) const
 {
@@ skipping 91 matching lines @@
 }
 
 DEFINE_TRACE(FrameFetchContext)
 {
     visitor->trace(m_document);
     visitor->trace(m_documentLoader);
     FetchContext::trace(visitor);
 }
 
 } // namespace blink