DevTools: fix front-end compilation problems after #399131

third_party/WebKit/Source/devtools/front_end/timeline_model/TimelineProfileTree.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.
 
 WebInspector.TimelineProfileTree = { };
 
 /**
  * @constructor
  */
 WebInspector.TimelineProfileTree.Node = function()
@@ skipping 200 matching lines @@
         return event.args["data"];
     var topFrame = event.stackTrace && event.stackTrace[0];
     if (topFrame)
         return topFrame;
     var initiator = event.initiator;
     return initiator && initiator.stackTrace && initiator.stackTrace[0] || null;
 }
 
 /**
  * @constructor
- * @param {function(!WebInspector.TracingModel.Event):{title: string, category: !WebInspector.TimelineCategory}} eventStyleMapper
+ * @param {function(!WebInspector.TracingModel.Event):string} titleMapper
+ * @param {function(!WebInspector.TracingModel.Event):string} categoryMapper
  */
-WebInspector.TimelineAggregator = function(eventStyleMapper)
+WebInspector.TimelineAggregator = function(titleMapper, categoryMapper)
 {
-    this._eventStyleMapper = eventStyleMapper;
+    this._titleMapper = titleMapper;
+    this._categoryMapper = categoryMapper;
     /** @type {!Map<string, !WebInspector.TimelineProfileTree.Node>} */
     this._groupNodes = new Map();
 }
 
 /**
  * @enum {string}
  */
 WebInspector.TimelineAggregator.GroupBy = {
     None: "None",
     EventName: "EventName",
@@ skipping 94 matching lines @@
             if (!groupSubdomains)
                 return parsedURL.host;
             if (/^[.0-9]+$/.test(parsedURL.host))
                 return parsedURL.host;
             var domainMatch = /([^.]*\.)?[^.]*$/.exec(parsedURL.host);
             return domainMatch && domainMatch[0] || "";
         }
 
         switch (groupBy) {
         case WebInspector.TimelineAggregator.GroupBy.None: return null;
-        case WebInspector.TimelineAggregator.GroupBy.EventName: return node => node.event ? this._eventStyleMapper(node.event).title : "";
-        case WebInspector.TimelineAggregator.GroupBy.Category: return node => node.event ? this._eventStyleMapper(node.event).category.name : "";
+        case WebInspector.TimelineAggregator.GroupBy.EventName: return node => node.event ? this._titleMapper(node.event) : "";
+        case WebInspector.TimelineAggregator.GroupBy.Category: return node => node.event ? this._categoryMapper(node.event) : "";
         case WebInspector.TimelineAggregator.GroupBy.Subdomain: return groupByDomain.bind(null, false);
         case WebInspector.TimelineAggregator.GroupBy.Domain: return groupByDomain.bind(null, true);
         case WebInspector.TimelineAggregator.GroupBy.URL: return groupByURL;
         default: return null;
         }
     },
 
     /**
      * @param {string} id
      * @param {!WebInspector.TracingModel.Event} event
@@ skipping 16 matching lines @@
      * @param {function(!WebInspector.TimelineProfileTree.Node):string} nodeToGroupId
      * @param {!WebInspector.TimelineProfileTree.Node} node
      * @return {!WebInspector.TimelineProfileTree.Node}
      */
     _nodeToGroupNode: function(nodeToGroupId, node)
     {
         var id = nodeToGroupId(node);
         return this._groupNodes.get(id) || this._buildGroupNode(id, node.event);
     },
 }