Sync CSS interfaces with the specs

Source/core/css/MediaList.idl

 /*
  * Copyright (C) 2006, 2007 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-// Introduced in DOM Level 2:
+// http://dev.w3.org/csswg/cssom/#the-medialist-interface
+
+// TODO(philipj): MediaList should be an [ArrayClass].
 [
     WillBeGarbageCollected
 ] interface MediaList {
-
-             attribute DOMString? mediaText;
+    // TODO(philipj): [TreatNullAs=EmptyString] stringifier attribute DOMString mediaText;
+    attribute DOMString? mediaText;
     readonly attribute unsigned long length;
-
     getter DOMString? item(unsigned long index);
-    [RaisesException] void deleteMedium(DOMString oldMedium);
-    [RaisesException] void appendMedium(DOMString newMedium);
-
+    // TODO(philipj): appendMedium() and deleteMedium() should never throw.
+    [RaisesException] void appendMedium(DOMString medium);
+    [RaisesException] void deleteMedium(DOMString medium);
 };
-