Worker: Stop calling Isolate::TerminateExecution() on a worker thread

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

Index: third_party/WebKit/Source/core/workers/WorkerThread.h
diff --git a/third_party/WebKit/Source/core/workers/WorkerThread.h b/third_party/WebKit/Source/core/workers/WorkerThread.h
index f6ac76aad9331ab276adf8f5fb2f35ad06928c6a..192f206027341e9a5ec4eed72d485acfea2120ae 100644
--- a/third_party/WebKit/Source/core/workers/WorkerThread.h
+++ b/third_party/WebKit/Source/core/workers/WorkerThread.h
@@ -141,7 +141,6 @@ private:
     bool m_readyToShutdown = false;
     bool m_pausedInDebugger = false;
     bool m_runningDebuggerTask = false;
-    bool m_shouldTerminateV8Execution = false;
 
     OwnPtr<InspectorTaskRunner> m_inspectorTaskRunner;
     OwnPtr<WorkerMicrotaskRunner> m_microtaskRunner;
@@ -150,8 +149,7 @@ private:
     WorkerReportingProxy& m_workerReportingProxy;
 
     // This lock protects |m_workerGlobalScope|, |m_terminated|,
-    // |m_readyToShutdown|, |m_runningDebuggerTask|,
-    // |m_shouldTerminateV8Execution| and |m_microtaskRunner|.
+    // |m_readyToShutdown|, |m_runningDebuggerTask| and |m_microtaskRunner|.
     Mutex m_threadStateMutex;
 
     Persistent<WorkerGlobalScope> m_workerGlobalScope;