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

third_party/WebKit/Source/modules/mediarecorder/MediaRecorder.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 MediaRecorder_h
 #define MediaRecorder_h
 
+#include "bindings/core/v8/V8GCRoot.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventTarget.h"
 #include "modules/EventTargetModules.h"
 #include "modules/ModulesExport.h"
 #include "modules/mediarecorder/MediaRecorderOptions.h"
 #include "modules/mediastream/MediaStream.h"
 #include "platform/AsyncMethodRunner.h"
 #include "public/platform/WebMediaRecorderHandler.h"
 #include "public/platform/WebMediaRecorderHandlerClient.h"
 
 namespace blink {
 
 class Blob;
 class BlobData;
 class ExceptionState;
 
 class MODULES_EXPORT MediaRecorder final
     : public RefCountedGarbageCollectedEventTargetWithInlineData<MediaRecorder>
     , public WebMediaRecorderHandlerClient
-    , public ActiveDOMObject {
+    , public ActiveDOMObject
+    , public V8GCRoot {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(MediaRecorder);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaRecorder);
     DEFINE_WRAPPERTYPEINFO();
 public:
     enum class State {
         Inactive = 0,
         Recording,
         Paused
     };
 
@@ skipping 65 matching lines @@
 
     OwnPtr<WebMediaRecorderHandler> m_recorderHandler;
 
     Member<AsyncMethodRunner<MediaRecorder>> m_dispatchScheduledEventRunner;
     WillBeHeapVector<RefPtrWillBeMember<Event>> m_scheduledEvents;
 };
 
 } // namespace blink
 
 #endif // MediaRecorder_h