Send synchronous loads through the cache.

Source/core/xml/XMLHttpRequest.cpp

 /*
  *  Copyright (C) 2004, 2006, 2008 Apple Inc. All rights reserved.
  *  Copyright (C) 2005-2007 Alexey Proskuryakov <ap@webkit.org>
  *  Copyright (C) 2007, 2008 Julien Chaffraix <jchaffraix@webkit.org>
  *  Copyright (C) 2008, 2011 Google Inc. All rights reserved.
  *  Copyright (C) 2012 Intel Corporation
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
@@ skipping 781 matching lines @@
         if (m_loader) {
             // Neither this object nor the JavaScript wrapper should be deleted while
             // a request is in progress because we need to keep the listeners alive,
             // and they are referenced by the JavaScript wrapper.
 
             // m_loader was null, so there should be no pending activity at this point.
             ASSERT(!hasPendingActivity());
             setPendingActivity(this);
         }
     } else {
-        request.setPriority(ResourceLoadPriorityVeryHigh);
-        InspectorInstrumentation::willLoadXHRSynchronously(scriptExecutionContext());
         ThreadableLoader::loadResourceSynchronously(scriptExecutionContext(), request, *this, options);
-        InspectorInstrumentation::didLoadXHRSynchronously(scriptExecutionContext());
     }
 
     if (!m_exceptionCode && m_error)
         m_exceptionCode = NetworkError;
     if (m_exceptionCode)
         es.throwDOMException(m_exceptionCode);
 }
 
 void XMLHttpRequest::abort()
 {
@@ skipping 479 matching lines @@
 {
     return eventNames().interfaceForXMLHttpRequest;
 }
 
 ScriptExecutionContext* XMLHttpRequest::scriptExecutionContext() const
 {
     return ActiveDOMObject::scriptExecutionContext();
 }
 
 } // namespace WebCore