IDL: Make enums have global visibility

Source/modules/indexeddb/IDBTransaction.idl

  /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple 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
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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-// FIXME: de-duplicate this when crbug.com/390758 is fixed.
 enum IDBTransactionMode {
     "readonly",
     "readwrite",
     "versionchange"
 };
 
 [
     ActiveDOMObject,
     GarbageCollected
 ] interface IDBTransaction : EventTarget {
 
     // Properties
     readonly attribute IDBTransactionMode mode;
     readonly attribute IDBDatabase db;
     readonly attribute DOMError error;
 
     // Methods
     [RaisesException] IDBObjectStore objectStore (DOMString name);
     [RaisesException] void abort ();
 
     // Events
     attribute EventHandler onabort;
     attribute EventHandler oncomplete;
     attribute EventHandler onerror;
 };