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

third_party/WebKit/Source/modules/indexeddb/IDBRequest.cpp

 /*
  * Copyright (C) 2010 Google 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
@@ skipping 42 matching lines @@
 {
     IDBRequest* request = new IDBRequest(scriptState, source, transaction);
     request->suspendIfNeeded();
     // Requests associated with IDBFactory (open/deleteDatabase/getDatabaseNames) are not associated with transactions.
     if (transaction)
         transaction->registerRequest(request);
     return request;
 }
 
 IDBRequest::IDBRequest(ScriptState* scriptState, IDBAny* source, IDBTransaction* transaction)
-    : ActiveDOMObject(scriptState->getExecutionContext())
+    : ActiveScriptWrappable(this)
+    , ActiveDOMObject(scriptState->getExecutionContext())
     , m_transaction(transaction)
     , m_scriptState(scriptState)
     , m_source(source)
 {
 }
 
 IDBRequest::~IDBRequest()
 {
     ASSERT(m_readyState == DONE || m_readyState == EarlyDeath || !getExecutionContext());
 }
@@ skipping 456 matching lines @@
 
 void IDBRequest::dequeueEvent(Event* event)
 {
     for (size_t i = 0; i < m_enqueuedEvents.size(); ++i) {
         if (m_enqueuedEvents[i].get() == event)
             m_enqueuedEvents.remove(i);
     }
 }
 
 } // namespace blink