WebUI: Enable ESLint rule for missing semicolons.

chrome/browser/resources/bluetooth_internals/value_control.js

 // Copyright 2017 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.
 
 /**
  * Javascript for ValueControl, served from chrome://bluetooth-internals/.
  */
 
 cr.define('value_control', function() {
   /** @const */ var Snackbar = snackbar.Snackbar;
@@ skipping 382 matching lines @@
               this.deviceAddress_ + ': Write succeeded', SnackbarType.SUCCESS);
           return;
         }
 
         var errorString = this.getErrorString_(response.result);
         Snackbar.show(
             this.deviceAddress_ + ': ' + errorString, SnackbarType.ERROR,
             'Retry', this.writeValue_.bind(this));
       }.bind(this));
     },
-  }
+  };
 
   return {
     ValueControl: ValueControl,
     ValueDataType: ValueDataType,
   };
 });