NOT FOR SUBMIT: use counters for jdm@

third_party/WebKit/Source/modules/vibration/NavigatorVibration.idl

 /*
  *  Copyright (C) 2012 Samsung Electronics
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public License
  *  along with this library; see the file COPYING.LIB.  If not, write to
  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  *  Boston, MA 02110-1301, USA.
  */
 
 // https://w3c.github.io/vibration/#vibration-interface
 
 partial interface Navigator {
     // FIXME: should be union type https://crbug.com/240176
     // FIXME: The contents of the pattern argument should be clamped.
     // See https://code.google.com/p/chromium/issues/detail?id=310138
-    boolean vibrate([Clamp] unsigned long pattern);
-    boolean vibrate(sequence<unsigned long> pattern);
+    [Measure] boolean vibrate([Clamp] unsigned long pattern);
+    [Measure] boolean vibrate(sequence<unsigned long> pattern);
 };