Timeline: streamline flame chart views update logic

third_party/WebKit/Source/devtools/front_end/timeline/TimelineTreeView.js

 // Copyright 2015 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.
 
 /**
  * @unrestricted
  */
 Timeline.TimelineTreeView = class extends UI.VBox {
   constructor() {
     super();
@@ skipping 12 matching lines @@
       return data['functionName'] + '@' + (data['scriptId'] || data['url'] || '');
     }
     return event.name + ':@' + TimelineModel.TimelineProfileTree.eventURL(event);
   }
 
   /**
    * @param {?Timeline.PerformanceModel} model
    */
   setModel(model) {
     this._model = model;
+    this.refreshTree();
   }
 
   /**
    * @protected
    * @return {?Timeline.PerformanceModel} model
    */
   model() {
     return this._model;
   }
 
@@ skipping 820 matching lines @@
 
   _onSelectionChanged() {
     this.dispatchEventToListeners(Timeline.TimelineStackView.Events.SelectionChanged);
   }
 };
 
 /** @enum {symbol} */
 Timeline.TimelineStackView.Events = {
   SelectionChanged: Symbol('SelectionChanged')
 };