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

third_party/WebKit/Source/core/workers/WorkerThread.cpp

Index: third_party/WebKit/Source/core/workers/WorkerThread.cpp
diff --git a/third_party/WebKit/Source/core/workers/WorkerThread.cpp b/third_party/WebKit/Source/core/workers/WorkerThread.cpp
index 07896af90af00783e7e8521ddab9811cb381677c..f334b9394a0d79152365d71bb502680c65bc6d90 100644
--- a/third_party/WebKit/Source/core/workers/WorkerThread.cpp
+++ b/third_party/WebKit/Source/core/workers/WorkerThread.cpp
@@ -194,7 +194,7 @@ void WorkerThread::start(std::unique_ptr<WorkerThreadStartupData> startupData)
         return;
 
     m_started = true;
-    workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WorkerThread::initializeOnWorkerThread, AllowCrossThreadAccess(this), passed(std::move(startupData))));
+    workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WorkerThread::initializeOnWorkerThread, crossThreadUnretained(this), passed(std::move(startupData))));
 }
 
 void WorkerThread::terminate()
@@ -253,7 +253,7 @@ void WorkerThread::postTask(const WebTraceLocation& location, std::unique_ptr<Ex
         DCHECK(isCurrentThread());
         InspectorInstrumentation::asyncTaskScheduled(workerGlobalScope(), "Worker task", task.get());
     }
-    workerBackingThread().backingThread().postTask(location, threadSafeBind(&WorkerThread::performTaskOnWorkerThread, AllowCrossThreadAccess(this), passed(std::move(task)), isInstrumented));
+    workerBackingThread().backingThread().postTask(location, threadSafeBind(&WorkerThread::performTaskOnWorkerThread, crossThreadUnretained(this), passed(std::move(task)), isInstrumented));
 }
 
 void WorkerThread::appendDebuggerTask(std::unique_ptr<CrossThreadClosure> task)
@@ -264,13 +264,13 @@ void WorkerThread::appendDebuggerTask(std::unique_ptr<CrossThreadClosure> task)
         if (m_terminated)
             return;
     }
-    m_inspectorTaskRunner->appendTask(threadSafeBind(&WorkerThread::performDebuggerTaskOnWorkerThread, AllowCrossThreadAccess(this), passed(std::move(task))));
+    m_inspectorTaskRunner->appendTask(threadSafeBind(&WorkerThread::performDebuggerTaskOnWorkerThread, crossThreadUnretained(this), passed(std::move(task))));
     {
         MutexLocker lock(m_threadStateMutex);
         if (isolate() && !m_readyToShutdown)
             m_inspectorTaskRunner->interruptAndRunAllTasksDontWait(isolate());
     }
-    workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WorkerThread::performDebuggerTaskDontWaitOnWorkerThread, AllowCrossThreadAccess(this)));
+    workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WorkerThread::performDebuggerTaskDontWaitOnWorkerThread, crossThreadUnretained(this)));
 }
 
 void WorkerThread::startRunningDebuggerTasksOnPauseOnWorkerThread()
@@ -419,8 +419,8 @@ void WorkerThread::terminateInternal(TerminationMode mode)
     }
 
     m_inspectorTaskRunner->kill();
-    workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WorkerThread::prepareForShutdownOnWorkerThread, AllowCrossThreadAccess(this)));
-    workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WorkerThread::performShutdownOnWorkerThread, AllowCrossThreadAccess(this)));
+    workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WorkerThread::prepareForShutdownOnWorkerThread, crossThreadUnretained(this)));
+    workerBackingThread().backingThread().postTask(BLINK_FROM_HERE, threadSafeBind(&WorkerThread::performShutdownOnWorkerThread, crossThreadUnretained(this)));
 }
 
 void WorkerThread::forciblyTerminateExecution()