Web Animations: Use an IDL enum for AnimationPlayState

Source/core/animation/AnimationPlayer.idl

 /*
  * Copyright (C) 2013 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 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER 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.
  */
 
+enum AnimationPlayState { "idle", "pending", "playing", "paused", "finished" };

[alancutter (OOO until 2018), 2014/09/10 01:19:28]

s/playing/running/

[dstockwell, 2014/09/10 01:22:57]

Done.

+
 [
     NoInterfaceObject,
     WillBeGarbageCollected,
     ActiveDOMObject,
 ] interface AnimationPlayer : EventTarget {
     [RuntimeEnabled=WebAnimationsAPI]                      attribute AnimationNode? source;
     [RuntimeEnabled=WebAnimationsPlaybackControl]          attribute double     startTime;
     [RuntimeEnabled=WebAnimationsPlaybackControl]          attribute double     currentTime;
     [RuntimeEnabled=WebAnimationsPlaybackControl]          attribute double     playbackRate;
-    [RuntimeEnabled=WebAnimationsPlaybackControl] readonly attribute DOMString  playState;
+    [RuntimeEnabled=WebAnimationsPlaybackControl] readonly attribute AnimationPlayState playState;
     [RuntimeEnabled=WebAnimationsPlaybackControl, RaisesException] void finish();
     [RuntimeEnabled=WebAnimationsPlaybackControl] void play();
     [RuntimeEnabled=WebAnimationsPlaybackControl] void pause();
     [RuntimeEnabled=WebAnimationsPlaybackControl] void reverse();
 
     void cancel();
     [MeasureAs=AnimationPlayerFinishEvent] attribute EventHandler onfinish;
 };