DevTools: use semicolons after each statement.

third_party/WebKit/Source/devtools/front_end/ui/DropDownMenu.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.
 
 /**
  * @constructor
  * @extends {WebInspector.Object}
  * @param {!Element} element
  */
 WebInspector.DropDownMenu = function(element)
 {
     /** @type {!Array.<!WebInspector.DropDownMenu.Item>} */
     this._items = [];
 
     element.addEventListener("mousedown", this._onMouseDown.bind(this));
-}
+};
 
 /** @typedef {{id: string, title: string}} */
 WebInspector.DropDownMenu.Item;
 
 /** @enum {symbol} */
 WebInspector.DropDownMenu.Events = {
     ItemSelected: Symbol("ItemSelected")
-}
+};
 
 WebInspector.DropDownMenu.prototype = {
     /**
      * @param {!Event} event
      */
     _onMouseDown: function(event)
     {
         if (event.which !== 1)
             return;
         var menu = new WebInspector.ContextMenu(event);
@@ skipping 27 matching lines @@
         this._selectedItemId = id;
     },
 
     clear: function()
     {
         this._items = [];
         delete this._selectedItemId;
     },
 
     __proto__: WebInspector.Object.prototype
-}
+};