IndexedDB: Add draft/proposal links for some experimental APIs in IDLs

Source/modules/indexeddb/IDBTransaction.idl

  /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All rights reserved.
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-// http://www.w3.org/TR/IndexedDB/#idl-def-IDBTransactionMode
+// https://w3c.github.io/IndexedDB/#idl-def-IDBTransactionMode
 
 enum IDBTransactionMode {
     "readonly",
     "readwrite",
     "versionchange"
 };
 
-// http://www.w3.org/TR/IndexedDB/#idl-def-IDBTransaction
+// https://w3c.github.io/IndexedDB/#idl-def-IDBTransaction
 
 [
     Exposed=(Window,Worker),
     ActiveDOMObject,
     GarbageCollected
 ] interface IDBTransaction : EventTarget {
 
     // Properties
+    [RuntimeEnabled=IndexedDBExperimental] readonly attribute DOMStringList objectStoreNames;
     readonly attribute IDBTransactionMode mode;
     readonly attribute IDBDatabase db;
     readonly attribute DOMError error;
-    // TODO(jsbell): Draft: https://w3c.github.io/IndexedDB/#widl-IDBTransaction-objectStoreNames
-    [RuntimeEnabled=IndexedDBExperimental] readonly attribute DOMStringList objectStoreNames;
 
     // Methods
     [RaisesException] IDBObjectStore objectStore (DOMString name);
     [RaisesException] void abort ();
 
     // Events
     attribute EventHandler onabort;
     attribute EventHandler oncomplete;
     attribute EventHandler onerror;
 };