IDL: make optional arguments (without default) explicit sometimes

Source/modules/indexeddb/InspectorIndexedDBAgent.cpp

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 175 matching lines @@
     OpenDatabaseCallback(ExecutableWithDatabase* executableWithDatabase)
         : EventListener(EventListener::CPPEventListenerType)
         , m_executableWithDatabase(executableWithDatabase) { }
     RefPtr<ExecutableWithDatabase> m_executableWithDatabase;
 };
 
 void ExecutableWithDatabase::start(IDBFactory* idbFactory, SecurityOrigin*, const String& databaseName)
 {
     RefPtr<OpenDatabaseCallback> callback = OpenDatabaseCallback::create(this);
     TrackExceptionState exceptionState;
-    IDBOpenDBRequest* idbOpenDBRequest = idbFactory->open(scriptState(), databaseName, exceptionState);
+    IDBOpenDBRequest* idbOpenDBRequest = idbFactory->open(scriptState(), databaseName, makeOptional(IDBDatabaseMetadata::NoIntVersion), exceptionState);
     if (exceptionState.hadException()) {
         requestCallback()->sendFailure("Could not open database.");
         return;
     }
     idbOpenDBRequest->addEventListener(EventTypeNames::success, callback, false);
 }
 
 static IDBTransaction* transactionForDatabase(ExecutionContext* executionContext, IDBDatabase* idbDatabase, const String& objectStoreName, const String& mode = IndexedDBNames::readonly)
 {
     TrackExceptionState exceptionState;
@@ skipping 568 matching lines @@
     clearObjectStore->start(idbFactory, document->securityOrigin(), databaseName);
 }
 
 void InspectorIndexedDBAgent::trace(Visitor* visitor)
 {
     visitor->trace(m_page);
     InspectorBaseAgent::trace(visitor);
 }
 
 } // namespace blink