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

third_party/WebKit/Source/modules/serviceworkers/ServiceWorker.h

 /*
  * 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ServiceWorker_h
 #define ServiceWorker_h
 
+#include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "core/workers/AbstractWorker.h"
 #include "modules/ModulesExport.h"
 #include "public/platform/modules/serviceworker/WebServiceWorker.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerProxy.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 
 namespace blink {
 
 class ScriptPromiseResolver;
 
-class MODULES_EXPORT ServiceWorker final : public AbstractWorker, public WebServiceWorkerProxy {
+class MODULES_EXPORT ServiceWorker final : public AbstractWorker, public ActiveScriptWrappable, public WebServiceWorkerProxy {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static ServiceWorker* from(ExecutionContext*, PassOwnPtr<WebServiceWorker::Handle>);
 
     ~ServiceWorker() override;
 
     // Eager finalization needed to promptly release owned WebServiceWorker.
     EAGERLY_FINALIZE();
 
     // Override 'operator new' to enforce allocation of eagerly finalized object.
     DECLARE_EAGER_FINALIZATION_OPERATOR_NEW();
 
     void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray*, ExceptionState&);
 
     String scriptURL() const;
     String state() const;
     DEFINE_ATTRIBUTE_EVENT_LISTENER(statechange);
 
     // WebServiceWorkerProxy overrides.
     void dispatchStateChangeEvent() override;
 
     // AbstractWorker overrides.
     const AtomicString& interfaceName() const override;
 
     void internalsTerminate();
 private:
     static ServiceWorker* getOrCreate(ExecutionContext*, PassOwnPtr<WebServiceWorker::Handle>);
     ServiceWorker(ExecutionContext*, PassOwnPtr<WebServiceWorker::Handle>);
 
+    // ActiveScriptWrappable overrides.
+    bool hasPendingActivity() const final;
+
     // ActiveDOMObject overrides.
-    bool hasPendingActivity() const override;
     void stop() override;
 
     // A handle to the service worker representation in the embedder.
     OwnPtr<WebServiceWorker::Handle> m_handle;
     bool m_wasStopped;
 };
 
 } // namespace blink
 
 #endif // ServiceWorker_h