Add use counters for lots of DOM APIs.

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

Index: third_party/WebKit/Source/core/animation/AnimationEffectTiming.idl
diff --git a/third_party/WebKit/Source/core/animation/AnimationEffectTiming.idl b/third_party/WebKit/Source/core/animation/AnimationEffectTiming.idl
index 5b0543f89b5f53d91abf1334e71739996e65d683..57e035a8791363457da3211ef4d4e66742ecb52c 100644
--- a/third_party/WebKit/Source/core/animation/AnimationEffectTiming.idl
+++ b/third_party/WebKit/Source/core/animation/AnimationEffectTiming.idl
@@ -7,12 +7,12 @@
 [
     RuntimeEnabled=WebAnimationsAPI,
 ] interface AnimationEffectTiming : AnimationEffectTimingReadOnly {
-    attribute double delay;
-    attribute double endDelay;
-    attribute DOMString fill;
-    [RaisesException=Setter] attribute double iterationStart;
-    [RaisesException=Setter] attribute unrestricted double iterations;
-    [RaisesException=Setter] attribute (unrestricted double or DOMString) duration;
-    attribute DOMString direction;
-    [RaisesException=Setter] attribute DOMString easing;
+    [Measure] attribute double delay;
+    [Measure] attribute double endDelay;
+    [Measure] attribute DOMString fill;
+    [RaisesException=Setter, Measure] attribute double iterationStart;
+    [RaisesException=Setter, Measure] attribute unrestricted double iterations;
+    [RaisesException=Setter, Measure] attribute (unrestricted double or DOMString) duration;
+    [Measure] attribute DOMString direction;
+    [RaisesException=Setter, Measure] attribute DOMString easing;
 };