Replace AllowCrossThreadAccess() + non-GCed pointers with crossThreadUnretained()

third_party/WebKit/Source/core/workers/WorkerThreadTestHelper.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "bindings/core/v8/SourceLocation.h"
 #include "bindings/core/v8/V8CacheOptions.h"
 #include "bindings/core/v8/V8GCController.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/workers/WorkerBackingThread.h"
@@ skipping 113 matching lines @@
             securityOrigin,
             clients,
             WebAddressSpaceLocal,
             nullptr,
             V8CacheOptionsDefault));
     }
 
     void waitForInit()
     {
         std::unique_ptr<WaitableEvent> completionEvent = wrapUnique(new WaitableEvent());
-        workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WaitableEvent::signal, AllowCrossThreadAccess(completionEvent.get())));
+        workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WaitableEvent::signal, crossThreadUnretained(completionEvent.get())));
         completionEvent->wait();
     }
 
 private:
     std::unique_ptr<WorkerBackingThread> m_workerBackingThread;
     std::unique_ptr<WaitableEvent> m_scriptLoadedEvent;
 };
 
 class FakeWorkerGlobalScope : public WorkerGlobalScope {
 public:
@@ skipping 25 matching lines @@
 private:
     WorkerThreadForTest* m_thread;
 };
 
 inline WorkerGlobalScope* WorkerThreadForTest::createWorkerGlobalScope(std::unique_ptr<WorkerThreadStartupData> startupData)
 {
     return new FakeWorkerGlobalScope(startupData->m_scriptURL, startupData->m_userAgent, this, std::move(startupData->m_starterOriginPrivilegeData), std::move(startupData->m_workerClients));
 }
 
 } // namespace blink