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

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

 // 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.
 
 #ifndef ServiceWorkerRegistration_h
 #define ServiceWorkerRegistration_h
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "bindings/core/v8/V8GCRoot.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventTarget.h"
 #include "modules/serviceworkers/ServiceWorker.h"
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
 #include "platform/Supplementable.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerRegistration.h"
 #include "public/platform/modules/serviceworker/WebServiceWorkerRegistrationProxy.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace blink {
 
 class ScriptPromise;
 class ScriptState;
 class WebServiceWorkerProvider;
 
 // The implementation of a service worker registration object in Blink. Actual
 // registration representation is in the embedder and this class accesses it
 // via WebServiceWorkerRegistration::Handle object.
 class ServiceWorkerRegistration final
     : public RefCountedGarbageCollectedEventTargetWithInlineData<ServiceWorkerRegistration>
     , public ActiveDOMObject
     , public WebServiceWorkerRegistrationProxy
-    , public HeapSupplementable<ServiceWorkerRegistration> {
+    , public HeapSupplementable<ServiceWorkerRegistration>
+    , public V8GCRoot {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(ServiceWorkerRegistration);
     USING_GARBAGE_COLLECTED_MIXIN(ServiceWorkerRegistration);
 public:
     // EventTarget overrides.
     const AtomicString& interfaceName() const override;
     ExecutionContext* getExecutionContext() const override { return ActiveDOMObject::getExecutionContext(); }
 
     // WebServiceWorkerRegistrationProxy overrides.
     void dispatchUpdateFoundEvent() override;
@@ skipping 50 matching lines @@
         HeapVector<Member<ServiceWorkerRegistration>> registrations;
         for (auto& registration : *webServiceWorkerRegistrations)
             registrations.append(ServiceWorkerRegistration::getOrCreate(resolver->getExecutionContext(), registration.release()));
         return registrations;
     }
 };
 
 } // namespace blink
 
 #endif // ServiceWorkerRegistration_h