WebUI: Enable ESLint rule for missing semicolons.

chrome/browser/resources/chromeos/chromevox/common/media_widget.js

 // Copyright 2014 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.
 
 goog.provide('cvox.ChromeVoxHTMLMediaWidget');
 
 /**
  * @fileoverview Gives the user spoken feedback as they interact with the HTML5
  * media widgets (<video> and <audio>) + makes the widget keyboard accessible.
  *
  */
 
 /**
  * A class containing the information needed to speak
  * a media element to the user.
  *
  * @constructor
  * @param {Element} mediaElem The media widget element.
  * @param {cvox.TtsInterface} tts The TTS object from ChromeVox.
  */
 cvox.ChromeVoxHTMLMediaWidget = function(mediaElem, tts){
   var self = this;
   this.mediaElem_ = mediaElem;
   this.mediaTts_ = tts;
 
   this.keyListener_ = function(evt) {
     self.eventHandler_(evt);
-  }
+  };
   this.blurListener_ = function(evt) {
     self.shutdown();
-  }
+  };
 
   this.mediaElem_.addEventListener('keydown', this.keyListener_, false);
   this.mediaElem_.addEventListener('keyup', this.keyListener_, false);
   this.mediaElem_.addEventListener('blur', this.blurListener_, false);
 };
 
 /**
  * Removes the key listeners for the media widget.
  */
 cvox.ChromeVoxHTMLMediaWidget.prototype.shutdown = function() {
@@ skipping 40 matching lines @@
     } else if (evt.keyCode == 37) { // Left - REW
       this.jumpToTime_(
           this.mediaElem_.currentTime - (this.mediaElem_.duration/10));
     } else if (evt.keyCode == 38) { // Up - Vol. Up
       this.setVolume_(this.mediaElem_.volume + .1);
     } else if (evt.keyCode == 40) { // Down - Vol. Down
       this.setVolume_(this.mediaElem_.volume - .1);
     }
   }
 };