Replace IDBPendingTransactionMonitor with end-of-recursion-scope tasks

Source/modules/indexeddb/IDBTransaction.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 41 matching lines @@
     return transaction;
 }
 
 IDBTransaction* IDBTransaction::create(ScriptState* scriptState, int64_t id, IDBDatabase* db, IDBOpenDBRequest* openDBRequest, const IDBDatabaseMetadata& previousMetadata)
 {
     IDBTransaction* transaction = new IDBTransaction(scriptState, id, Vector<String>(), WebIDBTransactionModeVersionChange, db, openDBRequest, previousMetadata);
     transaction->suspendIfNeeded();
     return transaction;
 }
 
+namespace {
+
+class DeactivateTransactionTask : public V8PerIsolateData::EndOfScopeTask {
+public:
+    static PassOwnPtr<DeactivateTransactionTask> create(IDBTransaction* transaction)
+    {
+        return adoptPtr(new DeactivateTransactionTask(transaction));
+    }
+
+    void Run() override
+    {
+        m_transaction->setActive(false);
+        m_transaction.clear();
+    }
+
+private:
+    DeactivateTransactionTask(IDBTransaction* transaction)
+        : m_transaction(transaction) { }
+
+    Persistent<IDBTransaction> m_transaction;
+};
+
+} // namespace
+
 IDBTransaction::IDBTransaction(ScriptState* scriptState, int64_t id, const Vector<String>& objectStoreNames, WebIDBTransactionMode mode, IDBDatabase* db, IDBOpenDBRequest* openDBRequest, const IDBDatabaseMetadata& previousMetadata)
     : ActiveDOMObject(scriptState->executionContext())
     , m_id(id)
     , m_database(db)
     , m_objectStoreNames(objectStoreNames)
     , m_openDBRequest(openDBRequest)
     , m_mode(mode)
     , m_state(Active)
     , m_hasPendingActivity(true)
     , m_contextStopped(false)
     , m_previousMetadata(previousMetadata)
 {
     if (mode == WebIDBTransactionModeVersionChange) {
         // Not active until the callback.
         m_state = Inactive;
     }
 
     if (m_state == Active)
-        V8PerIsolateData::from(scriptState->isolate())->ensureIDBPendingTransactionMonitor()->addNewTransaction(*this);
+        V8PerIsolateData::from(scriptState->isolate())->addEndOfScopeTask(DeactivateTransactionTask::create(this));
     m_database->transactionCreated(this);
 }
 
 IDBTransaction::~IDBTransaction()
 {
     ASSERT(m_state == Finished || m_contextStopped);
     ASSERT(m_requestList.isEmpty() || m_contextStopped);
 }
 
 void IDBTransaction::trace(Visitor* visitor)
@@ skipping 279 matching lines @@
     event->setTarget(this);
     eventQueue->enqueueEvent(event);
 }
 
 WebIDBDatabase* IDBTransaction::backendDB() const
 {
     return m_database->backend();
 }
 
 } // namespace blink