DevTools: Remove unused code after service/shared worker inspection migration to main thread.

Source/core/workers/WorkerObjectProxy.cpp

 /*
  * Copyright (C) 2013 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 65 matching lines @@
 {
     m_executionContext->postTask(createCrossThreadTask(&WorkerMessagingProxy::reportConsoleMessage, m_messagingProxy, consoleMessage->source(), consoleMessage->level(), consoleMessage->message(), consoleMessage->lineNumber(), consoleMessage->url()));
 }
 
 void WorkerObjectProxy::postMessageToPageInspector(const String& message)
 {
     if (m_executionContext->isDocument())
         toDocument(m_executionContext)->postInspectorTask(createCrossThreadTask(&WorkerMessagingProxy::postMessageToPageInspector, m_messagingProxy, message));
 }
 
-void WorkerObjectProxy::updateInspectorStateCookie(const String&)
-{
-    notImplemented();
-}
-
 void WorkerObjectProxy::workerGlobalScopeClosed()
 {
     m_executionContext->postTask(createCrossThreadTask(&WorkerMessagingProxy::terminateWorkerGlobalScope, m_messagingProxy));
 }
 
 void WorkerObjectProxy::workerThreadTerminated()
 {
     // This will terminate the MessagingProxy.
     m_executionContext->postTask(createCrossThreadTask(&WorkerMessagingProxy::workerThreadTerminated, m_messagingProxy));
 }
 
 WorkerObjectProxy::WorkerObjectProxy(ExecutionContext* executionContext, WorkerMessagingProxy* messagingProxy)
     : m_executionContext(executionContext)
     , m_messagingProxy(messagingProxy)
 {
 }
 
 } // namespace blink