Worker: Consolidate postTask implementation

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

Index: third_party/WebKit/Source/core/workers/WorkerGlobalScope.h
diff --git a/third_party/WebKit/Source/core/workers/WorkerGlobalScope.h b/third_party/WebKit/Source/core/workers/WorkerGlobalScope.h
index 09c51275fba5c18fc21eeca7156acff65d7d1720..2c5486b8163644d481643b8cb42bbe946ec79d23 100644
--- a/third_party/WebKit/Source/core/workers/WorkerGlobalScope.h
+++ b/third_party/WebKit/Source/core/workers/WorkerGlobalScope.h
@@ -126,11 +126,6 @@ class CORE_EXPORT WorkerGlobalScope
   void disableEval(const String& errorMessage) final;
   String userAgent() const final { return m_userAgent; }
 
-  void postTask(TaskType,
-                const WebTraceLocation&,
-                std::unique_ptr<ExecutionContextTask>,
-                const String& taskNameForInstrumentation = emptyString()) final;
-
   DOMTimerCoordinator* timers() final { return &m_timers; }
   SecurityContext& securityContext() final { return *this; }
   void addConsoleMessage(ConsoleMessage*) final;