[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 15 matching lines @@
  * 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/ScriptPromise.h"
 #include "bindings/core/v8/SerializedScriptValue.h"
+#include "bindings/core/v8/V8GCRoot.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 WebServiceWorkerProxy, public V8GCRoot {
     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.
@@ skipping 21 matching lines @@
     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