Port messages sent by WebIDBFactoryImpl to Mojo.

third_party/WebKit/Source/modules/indexeddb/IDBDatabase.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 376 matching lines @@
 
 void IDBDatabase::closeConnection() {
   DCHECK(m_closePending);
   DCHECK(m_transactions.isEmpty());
 
   if (m_backend) {
     m_backend->close();
     m_backend.reset();
   }
 
+  if (m_databaseCallbacks)
+    m_databaseCallbacks->detachWebCallbacks();
+
   if (m_contextStopped || !getExecutionContext())
     return;
 
   EventQueue* eventQueue = getExecutionContext()->getEventQueue();
   // Remove any pending versionchange events scheduled to fire on this
   // connection. They would have been scheduled by the backend when another
   // connection attempted an upgrade, but the frontend connection is being
   // closed before they could fire.
   for (size_t i = 0; i < m_enqueuedEvents.size(); ++i) {
     bool removed = eventQueue->cancelEvent(m_enqueuedEvents[i].get());
@@ skipping 112 matching lines @@
 void IDBDatabase::contextDestroyed() {
   m_contextStopped = true;
 
   // Immediately close the connection to the back end. Don't attempt a
   // normal close() since that may wait on transactions which require a
   // round trip to the back-end to abort.
   if (m_backend) {
     m_backend->close();
     m_backend.reset();
   }
+
+  if (m_databaseCallbacks)
+    m_databaseCallbacks->detachWebCallbacks();
 }
 
 const AtomicString& IDBDatabase::interfaceName() const {
   return EventTargetNames::IDBDatabase;
 }
 
 ExecutionContext* IDBDatabase::getExecutionContext() const {
   return ActiveDOMObject::getExecutionContext();
 }
 
 void IDBDatabase::recordApiCallsHistogram(IndexedDatabaseMethods method) {
   DEFINE_THREAD_SAFE_STATIC_LOCAL(
       EnumerationHistogram, apiCallsHistogram,
       new EnumerationHistogram("WebCore.IndexedDB.FrontEndAPICalls",
                                IDBMethodsMax));
   apiCallsHistogram.count(method);
 }
 
 }  // namespace blink