DevTools: use semicolons after each statement.

third_party/WebKit/Source/devtools/front_end/timeline_model/TracingLayerTree.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.
 
 /** @typedef {!{
         bounds: {height: number, width: number},
         children: Array.<!WebInspector.TracingLayerPayload>,
         layer_id: number,
         position: Array.<number>,
         scroll_offset: Array.<number>,
@@ skipping 26 matching lines @@
 /**
   * @constructor
   * @extends {WebInspector.LayerTreeBase}
   * @param {?WebInspector.Target} target
   */
 WebInspector.TracingLayerTree = function(target)
 {
     WebInspector.LayerTreeBase.call(this, target);
     /** @type {!Map.<string, !WebInspector.TracingLayerTile>} */
     this._tileById = new Map();
-}
+};
 
 WebInspector.TracingLayerTree.prototype = {
     /**
      * @param {?WebInspector.TracingLayerPayload} root
      * @param {?Array<!WebInspector.TracingLayerPayload>} layers
      * @param {!Array<!WebInspector.LayerPaintEvent>} paints
      * @param {function()} callback
      */
     setLayers: function(root, layers, paints, callback)
     {
@@ skipping 104 matching lines @@
     _extractNodeIdsToResolve: function(nodeIdsToResolve, seenNodeIds, payload)
     {
         var backendNodeId = payload.owner_node;
         if (backendNodeId && !this._backendNodeIdToNode.has(backendNodeId))
             nodeIdsToResolve.add(backendNodeId);
         for (var i = 0; payload.children && i < payload.children.length; ++i)
             this._extractNodeIdsToResolve(nodeIdsToResolve, seenNodeIds, payload.children[i]);
     },
 
     __proto__: WebInspector.LayerTreeBase.prototype
-}
+};
 
 /**
  * @constructor
  * @param {!WebInspector.TracingLayerPayload} payload
  * @implements {WebInspector.Layer}
  */
 WebInspector.TracingLayer = function(payload)
 {
     this._reset(payload);
-}
+};
 
 WebInspector.TracingLayer.prototype = {
     /**
      * @param {!WebInspector.TracingLayerPayload} payload
      */
     _reset: function(payload)
     {
         /** @type {?WebInspector.DOMNode} */
         this._node = null;
         this._layerId = String(payload.layer_id);
@@ skipping 296 matching lines @@
     },
 
     /**
      * @override
      * @return {boolean}
      */
     drawsContent: function()
     {
         return this._drawsContent;
     }
-}
+};