WebUI: Fix more violations of no-extra-semi lint rule.

chrome/browser/resources/chromeos/arc_support/background.js

 // Copyright 2016 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.
 
 /**
  * Chrome window that hosts UI. Only one window is allowed.
  * @type {chrome.app.window.AppWindow}
  */
 var appWindow = null;
 
@@ skipping 114 matching lines @@
       }
     }
   }
 
   /**
    * Called when the "Learn More" link is clicked.
    */
   onLearnMoreLinkClicked() {
     showTextOverlay(this.learnMoreContent_);
   }
-};
+}
 
 /**
  * Handles the checkbox action of metrics preference.
  * This has special customization e.g. show/hide the checkbox based on
  * the native preference.
  */
 class MetricsPreferenceCheckbox extends PreferenceCheckbox {
   constructor(
       container, learnMoreContent, learnMoreLinkId, isOwner,
       textDisabled, textEnabled, textManagedDisabled, textManagedEnabled) {
@@ skipping 36 matching lines @@
     var settingsLink = this.label_.querySelector('#settings-link');
     settingsLink.addEventListener(
         'click', (event) => this.onSettingsLinkClicked(event));
   }
 
   /** Called when "settings" link is clicked. */
   onSettingsLinkClicked(event) {
     chrome.browser.openTab({'url': 'chrome://settings'}, function() {});
     event.preventDefault();
   }
-};
+}
 
 /**
  * Represents the page loading state.
  * @enum {number}
  */
 var LoadState = {
   UNLOADED: 0,
   LOADING: 1,
   ABORTED: 2,
   LOADED: 3,
@@ skipping 187 matching lines @@
 
   /** Called when backup-restore preference is updated. */
   onBackupRestorePreferenceChanged(isEnabled, isManaged) {
     this.backupRestoreCheckbox_.onPreferenceChanged(isEnabled, isManaged);
   }
 
   /** Called when location service preference is updated. */
   onLocationServicePreferenceChanged(isEnabled, isManaged) {
     this.locationServiceCheckbox_.onPreferenceChanged(isEnabled, isManaged);
   }
-};
+}
 
 /**
  * Applies localization for html content and sets terms webview.
  * @param {!Object} data Localized strings and relevant information.
  * @param {string} deviceId Current device id.
  */
 function initialize(data, deviceId) {
   currentDeviceId = deviceId;
   var doc = appWindow.contentWindow.document;
   var loadTimeData = appWindow.contentWindow.loadTimeData;
@@ skipping 355 matching lines @@
       type: 'chrome',
       color: '#ffffff'
     },
     'innerBounds': {
       'width': INNER_WIDTH,
       'height': INNER_HEIGHT
     }
   };
   chrome.app.window.create('main.html', options, onWindowCreated);
 });