Add UseCounter for SpeechRecognition

third_party/WebKit/Source/modules/speech/SpeechRecognition.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 copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 25 matching lines @@
     attribute SpeechGrammarList grammars;
     attribute DOMString lang;
     attribute boolean continuous;
     attribute boolean interimResults;
     attribute unsigned long maxAlternatives;
 
     // Speech Recognition with WebRTC. https://crbug.com/408940
     [RuntimeEnabled=MediaStreamSpeech] attribute MediaStreamTrack? audioTrack;
 
     // methods to drive the speech interaction
-    [RaisesException] void start();
+    [RaisesException, Measure] void start();
     [ImplementedAs=stopFunction] void stop();
     void abort();
 
     // event methods
     attribute EventHandler onaudiostart;
     attribute EventHandler onsoundstart;
     attribute EventHandler onspeechstart;
     attribute EventHandler onspeechend;
     attribute EventHandler onsoundend;
     attribute EventHandler onaudioend;
     attribute EventHandler onresult;
     attribute EventHandler onnomatch;
     attribute EventHandler onerror;
     attribute EventHandler onstart;
     attribute EventHandler onend;
 };