NOT FOR SUBMIT: use counters for jdm@

third_party/WebKit/Source/core/animation/AnimationEffectTimingReadOnly.idl

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // https://w3c.github.io/web-animations/#the-animationeffecttimingreadonly-interface
 // TODO(suzyh): Use enums instead of DOMStrings where specced
 
 [
     RuntimeEnabled=WebAnimationsAPI,
 ] interface AnimationEffectTimingReadOnly {
-    readonly attribute double delay;
-    readonly attribute double endDelay;
-    readonly attribute DOMString fill;
-    readonly attribute double iterationStart;
-    readonly attribute unrestricted double iterations;
-    readonly attribute (unrestricted double or DOMString) duration;
-    readonly attribute DOMString direction;
-    readonly attribute DOMString easing;
+    [Measure] readonly attribute double delay;
+    [Measure] readonly attribute double endDelay;
+    [Measure] readonly attribute DOMString fill;
+    [Measure] readonly attribute double iterationStart;
+    [Measure] readonly attribute unrestricted double iterations;
+    [Measure] readonly attribute (unrestricted double or DOMString) duration;
+    [Measure] readonly attribute DOMString direction;
+    [Measure] readonly attribute DOMString easing;
 };