Turn WorkerLoaderProxy into a threadsafe, ref-counted object.

Source/core/workers/SharedWorkerThread.cpp

 /*
  * Copyright (C) 2009 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 19 matching lines @@
 
 #include "config.h"
 
 #include "core/workers/SharedWorkerThread.h"
 
 #include "core/workers/SharedWorkerGlobalScope.h"
 #include "core/workers/WorkerThreadStartupData.h"
 
 namespace blink {
 
-PassRefPtr<SharedWorkerThread> SharedWorkerThread::create(const String& name, WorkerLoaderProxy& workerLoaderProxy, WorkerReportingProxy& workerReportingProxy, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData> startupData)
+PassRefPtr<SharedWorkerThread> SharedWorkerThread::create(const String& name, PassRefPtr<WorkerLoaderProxy> workerLoaderProxy, WorkerReportingProxy& workerReportingProxy, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData> startupData)
 {
     return adoptRef(new SharedWorkerThread(name, workerLoaderProxy, workerReportingProxy, startupData));
 }
 
-SharedWorkerThread::SharedWorkerThread(const String& name, WorkerLoaderProxy& workerLoaderProxy, WorkerReportingProxy& workerReportingProxy, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData> startupData)
+SharedWorkerThread::SharedWorkerThread(const String& name, PassRefPtr<WorkerLoaderProxy> workerLoaderProxy, WorkerReportingProxy& workerReportingProxy, PassOwnPtrWillBeRawPtr<WorkerThreadStartupData> startupData)
     : WorkerThread(workerLoaderProxy, workerReportingProxy, startupData)
     , m_name(name.isolatedCopy())
 {
 }
 
 SharedWorkerThread::~SharedWorkerThread()
 {
 }
 
 PassRefPtrWillBeRawPtr<WorkerGlobalScope> SharedWorkerThread::createWorkerGlobalScope(PassOwnPtrWillBeRawPtr<WorkerThreadStartupData> startupData)
 {
     return SharedWorkerGlobalScope::create(m_name, this, startupData);
 }
 
 } // namespace blink