WebUI: Enable ESLint rule for missing semicolons.

chrome/browser/resources/cryptotoken/gnubbies.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.
 
 /**
  * @fileoverview A class for managing all enumerated gnubby devices.
  */
 'use strict';
 
 /**
@@ skipping 195 matching lines @@
         var cb = self.pendingEnumerate.shift();
         cb(-GnubbyDevice.OK, existingDeviceIds);
       }
     }
   }
 
   var deviceIds = [];
   function makeEnumerateCb(namespace) {
     return function(devs) {
       enumerated(namespace, deviceIds, devs);
-    }
+    };
   }
 
   this.pendingEnumerate.push(cb);
   if (this.pendingEnumerate.length == 1) {
     for (var i = 0; i < this.namespaces_.length; i++) {
       var namespace = this.namespaces_[i];
       var enumerator = this.impl_[namespace].enumerate;
       enumerator(makeEnumerateCb(namespace), opt_type);
     }
   }
@@ skipping 186 matching lines @@
         if (whichDev && dev != whichDev) {
           console.warn('Gnubby attached to more than one device!?');
         }
         if (!dev.deregisterClient(who)) {
           dev.destroy();
         }
       }
     }
   }
 };