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

third_party/WebKit/Source/core/dom/MessagePort.h

 /*
  * Copyright (C) 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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 #ifndef MessagePort_h
 #define MessagePort_h
 
+#include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventListener.h"
 #include "core/events/EventTarget.h"
 #include "public/platform/WebMessagePortChannel.h"
 #include "public/platform/WebMessagePortChannelClient.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
@@ skipping 10 matching lines @@
 class SerializedScriptValue;
 
 // The overwhelmingly common case is sending a single port, so handle that efficiently with an inline buffer of size 1.
 typedef HeapVector<Member<MessagePort>, 1> MessagePortArray;
 
 // Not to be confused with WebMessagePortChannelArray; this one uses Vector and OwnPtr instead of WebVector and raw pointers.
 typedef Vector<OwnPtr<WebMessagePortChannel>, 1> MessagePortChannelArray;
 
 class CORE_EXPORT MessagePort
     : public RefCountedGarbageCollectedEventTargetWithInlineData<MessagePort>
+    , public ActiveScriptWrappable
     , public ActiveDOMObject
     , public WebMessagePortChannelClient {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(MessagePort);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MessagePort);
 public:
     static MessagePort* create(ExecutionContext&);
     ~MessagePort() override;
 
     void postMessage(ExecutionContext*, PassRefPtr<SerializedScriptValue> message, const MessagePortArray*, ExceptionState&);
@@ skipping 12 matching lines @@
 
     // Returns 0 if the passed array is 0/empty.
     static MessagePortArray* entanglePorts(ExecutionContext&, PassOwnPtr<MessagePortChannelArray>);
 
     bool started() const { return m_started; }
 
     const AtomicString& interfaceName() const override;
     ExecutionContext* getExecutionContext() const override { return ActiveDOMObject::getExecutionContext(); }
     MessagePort* toMessagePort() override { return this; }
 
+    // ActiveScriptWrappable implementation.
+    bool hasPendingActivity() const final;
+
     // ActiveDOMObject implementation.
-    bool hasPendingActivity() const override;
     void stop() override { close(); }
 
     void setOnmessage(PassRefPtrWillBeRawPtr<EventListener> listener)
     {
         setAttributeEventListener(EventTypeNames::message, listener);
         start();
     }
     EventListener* onmessage() { return getAttributeEventListener(EventTypeNames::message); }
 
     // A port starts out its life entangled, and remains entangled until it is closed or is cloned.
@@ skipping 21 matching lines @@
     bool m_closed;
 
     WeakPtrFactory<MessagePort> m_weakFactory;
 
     RefPtr<ScriptState> m_scriptStateForConversion;
 };
 
 } // namespace blink
 
 #endif // MessagePort_h