Add use counters for lots of DOM APIs.

third_party/WebKit/Source/core/timing/PerformanceEntry.idl

 /*
  * Copyright (C) 2012 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 14 matching lines @@
  * 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.
  */
 
 // https://w3c.github.io/performance-timeline/#the-performanceentry-interface
 
 // TODO(foolip): Exposed=(Window,Worker)
 interface PerformanceEntry {
-    readonly attribute DOMString name;
-    readonly attribute DOMString entryType;
-    readonly attribute DOMHighResTimeStamp startTime;
-    readonly attribute DOMHighResTimeStamp duration;
+    [Measure] readonly attribute DOMString name;
+    [Measure] readonly attribute DOMString entryType;
+    [Measure] readonly attribute DOMHighResTimeStamp startTime;
+    [Measure] readonly attribute DOMHighResTimeStamp duration;
     serializer = {attribute};
 };