[WIP] Migrate hasPendingActivity from ActiveDOMObject to ScriptWrappable.

Source/core/workers/DedicatedWorkerGlobalScope.cpp

 /*
  * Copyright (C) 2009 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 58 matching lines @@
     // Disentangle the port in preparation for sending it to the remote context.
     OwnPtr<MessagePortChannelArray> channels = MessagePort::disentanglePorts(ports, exceptionState);
     if (exceptionState.hadException())
         return;
     thread()->workerObjectProxy().postMessageToWorkerObject(message, channels.release());
 }
 
 void DedicatedWorkerGlobalScope::importScripts(const Vector<String>& urls, ExceptionState& exceptionState)
 {
     Base::importScripts(urls, exceptionState);
-    thread()->workerObjectProxy().reportPendingActivity(hasPendingActivity());
+    thread()->workerObjectProxy().reportPendingActivity(ContextLifecycleNotifier::hasPendingActivity());
 }
 
 DedicatedWorkerThread* DedicatedWorkerGlobalScope::thread() const
 {
     return static_cast<DedicatedWorkerThread*>(Base::thread());
 }
 
 class UseCounterTask : public ExecutionContextTask {
 public:
     static PassOwnPtr<UseCounterTask> createCount(UseCounter::Feature feature) { return adoptPtr(new UseCounterTask(feature, false)); }
@@ skipping 28 matching lines @@
 {
     thread()->workerObjectProxy().postTaskToMainExecutionContext(UseCounterTask::createDeprecation(feature));
 }
 
 DEFINE_TRACE(DedicatedWorkerGlobalScope)
 {
     WorkerGlobalScope::trace(visitor);
 }
 
 } // namespace blink