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

third_party/WebKit/Source/core/page/EventSource.cpp

 /*
  * Copyright (C) 2009, 2012 Ericsson AB. All rights reserved.
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011, Code Aurora Forum. 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
@@ skipping 43 matching lines @@
 #include "platform/network/ResourceResponse.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "public/platform/WebURLRequest.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace blink {
 
 const unsigned long long EventSource::defaultReconnectDelay = 3000;
 
 inline EventSource::EventSource(ExecutionContext* context, const KURL& url, const EventSourceInit& eventSourceInit)
-    : ActiveDOMObject(context)
+    : ActiveScriptWrappable(this)
+    , ActiveDOMObject(context)
     , m_url(url)
     , m_withCredentials(eventSourceInit.withCredentials())
     , m_state(CONNECTING)
     , m_connectTimer(this, &EventSource::connectTimerFired)
     , m_reconnectDelay(defaultReconnectDelay)
 {
 }
 
 EventSource* EventSource::create(ExecutionContext* context, const String& url, const EventSourceInit& eventSourceInit, ExceptionState& exceptionState)
 {
@@ skipping 274 matching lines @@
 
 DEFINE_TRACE(EventSource)
 {
     visitor->trace(m_parser);
     RefCountedGarbageCollectedEventTargetWithInlineData::trace(visitor);
     ActiveDOMObject::trace(visitor);
     EventSourceParser::Client::trace(visitor);
 }
 
 } // namespace blink