Added UseCounter for clearing browsing context name on cross-origin name

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
@@ skipping 355 matching lines @@
   SubframeLoadingDisabler disabler(m_frame->document());
   m_frame->detachChildren();
   m_frame->document()->shutdown();
   clear();
 
   // detachChildren() potentially detaches the frame from the document. The
   // loading cannot continue in that case.
   if (!m_frame->page())
     return;
 
+  SecurityOrigin* frameSecurityOrigin =
+      frameSecurityOrigin = m_frame->document()->getSecurityOrigin();
+
   client()->transitionToCommittedForNewPage();
-  documentLoader->replaceDocumentWhileExecutingJavaScriptURL(init, source);
+  documentLoader->replaceDocumentWhileExecutingJavaScriptURL(
+      init, source, frameSecurityOrigin);
 }
 
 void FrameLoader::finishedParsing() {
   if (m_stateMachine.creatingInitialEmptyDocument())
     return;
 
   m_progressTracker->finishedParsing();
 
   if (client()) {
     ScriptForbiddenScope forbidScripts;
@@ skipping 1363 matching lines @@
   // TODO(japhet): This is needed because the browser process DCHECKs if the
   // first entry we commit in a new frame has replacement set. It's unclear
   // whether the DCHECK is right, investigate removing this special case.
   bool replaceCurrentItem = loadType == FrameLoadTypeReplaceCurrentItem &&
                             (!opener() || !request.url().isEmpty());
   loader->setReplacesCurrentHistoryItem(replaceCurrentItem);
   return loader;
 }
 
 }  // namespace blink