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

third_party/WebKit/Source/modules/permissions/PermissionStatus.cpp

 // 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.
 
 #include "modules/permissions/PermissionStatus.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/Document.h"
 #include "core/events/Event.h"
 #include "modules/EventTargetModulesNames.h"
@@ skipping 12 matching lines @@
 
 PermissionStatus* PermissionStatus::createAndListen(ExecutionContext* executionContext, WebPermissionStatus status, WebPermissionType type)
 {
     PermissionStatus* permissionStatus = new PermissionStatus(executionContext, status, type);
     permissionStatus->suspendIfNeeded();
     permissionStatus->startListening();
     return permissionStatus;
 }
 
 PermissionStatus::PermissionStatus(ExecutionContext* executionContext, WebPermissionStatus status, WebPermissionType type)
-    : ActiveDOMObject(executionContext)
+    : ActiveScriptWrappable(this)
+    , ActiveDOMObject(executionContext)
     , m_status(status)
     , m_type(type)
     , m_listening(false)
 {
 }
 
 PermissionStatus::~PermissionStatus()
 {
     stopListening();
 }
@@ skipping 78 matching lines @@
     return "denied";
 }
 
 DEFINE_TRACE(PermissionStatus)
 {
     RefCountedGarbageCollectedEventTargetWithInlineData<PermissionStatus>::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink