[v8 gc] Introduce a base class for all objects that can have pending activity

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerRegistration.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
 
 #include "bindings/core/v8/CallbackPromiseAdapter.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "core/dom/DOMException.h"
@@ skipping 80 matching lines @@
     if (!m_provider) {
         resolver->reject(DOMException::create(InvalidStateError, "Failed to unregister a ServiceWorkerRegistration: No associated provider is available."));
         return promise;
     }
 
     m_handle->registration()->unregister(m_provider, new CallbackPromiseAdapter<bool, ServiceWorkerError>(resolver));
     return promise;
 }
 
 ServiceWorkerRegistration::ServiceWorkerRegistration(ExecutionContext* executionContext, PassOwnPtr<WebServiceWorkerRegistration::Handle> handle)
-    : ActiveDOMObject(executionContext)
+    : ActiveScriptWrappable(this)
+    , ActiveDOMObject(executionContext)
     , m_handle(handle)
     , m_provider(nullptr)
     , m_stopped(false)
 {
     ASSERT(m_handle);
     ASSERT(!m_handle->registration()->proxy());
 
     if (!executionContext)
         return;
     if (ServiceWorkerContainerClient* client = ServiceWorkerContainerClient::from(executionContext))
@@ skipping 22 matching lines @@
 
 void ServiceWorkerRegistration::stop()
 {
     if (m_stopped)
         return;
     m_stopped = true;
     m_handle->registration()->proxyStopped();
 }
 
 } // namespace blink