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

third_party/WebKit/Source/modules/presentation/PresentationRequest.h

 // Copyright 2015 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 PresentationRequest_h
 #define PresentationRequest_h
 
+#include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventTarget.h"
 #include "platform/heap/Handle.h"
 #include "platform/heap/Heap.h"
 #include "platform/weborigin/KURL.h"
 
 namespace blink {
 
 // Implements the PresentationRequest interface from the Presentation API from
 // which websites can start or join presentation connections.
 class PresentationRequest final
     : public RefCountedGarbageCollectedEventTargetWithInlineData<PresentationRequest>
+    , public ActiveScriptWrappable
     , public ActiveDOMObject {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(PresentationRequest);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PresentationRequest);
     DEFINE_WRAPPERTYPEINFO();
 public:
     ~PresentationRequest() = default;
 
     static PresentationRequest* create(ExecutionContext*, const String& url, ExceptionState&);
 
     // EventTarget implementation.
     const AtomicString& interfaceName() const override;
     ExecutionContext* getExecutionContext() const override;
 
-    // ActiveDOMObject implementation.
-    bool hasPendingActivity() const;
+    // ActiveScriptWrappable implementation.
+    bool hasPendingActivity() const final;
 
     ScriptPromise start(ScriptState*);
     ScriptPromise reconnect(ScriptState*, const String& id);
     ScriptPromise getAvailability(ScriptState*);
 
     const KURL& url() const;
 
     DEFINE_ATTRIBUTE_EVENT_LISTENER(connectionavailable);
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     // EventTarget implementation.
     bool addEventListenerInternal(const AtomicString& eventType, PassRefPtrWillBeRawPtr<EventListener>, const EventListenerOptions&) override;
 
 private:
     PresentationRequest(ExecutionContext*, const KURL&);
 
     KURL m_url;
 };
 
 } // namespace blink
 
 #endif // PresentationRequest_h