Timeline: fix frame event dividers in Timeline's main view

Source/devtools/front_end/TimelinePanel.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 290 matching lines @@
                 views.mainViews = [this._tracingView()];
                 break;
             default:
                 console.assert(false, "Unknown mode: " + mode);
             }
             for (var i = 0; i < views.mainViews.length; ++i)
                 views.mainViews[i].addEventListener(WebInspector.SplitView.Events.SidebarSizeChanged, this._sidebarResized, this);
             this._viewsMap[mode] = views;
         }
 
-        this._timelineView().setFrameModel(mode === WebInspector.TimelinePanel.Mode.Frames ? this._frameModel() : null);
         return views;
     },
 
     _createPresentationSelector: function()
     {
         this._viewsMap = {};
 
         var topPaneSidebarElement = this._topPane.sidebarElement();
         topPaneSidebarElement.id = "timeline-overview-sidebar";
 
@@ skipping 244 matching lines @@
         this.element.classList.add("timeline-" + mode.toLowerCase() + "-view");
         this._stackView.detachChildViews();
         var views = this._viewsForMode(mode);
         this._currentViews = views.mainViews;
         for (var i = 0; i < this._currentViews.length; ++i) {
             var view = this._currentViews[i];
             view.setWindowTimes(this.windowStartTime(), this.windowEndTime());
             this._stackView.appendView(view, "timelinePanelTimelineStackSplitViewState");
             view.refreshRecords(this._textFilter._regex);
         }
+        this._timelineView().setFrameModel(mode === WebInspector.TimelinePanel.Mode.Frames ? this._frameModel() : null);
         this._overviewControl = views.overviewView;
         this._overviewPane.setOverviewControl(this._overviewControl);
         this._updateSelectionDetails();
     },
 
     /**
      * @param {boolean} userInitiated
      */
     _startRecording: function(userInitiated)
     {
@@ skipping 599 matching lines @@
      * @param {!WebInspector.TimelineModel.Record} record
      * @return {boolean}
      */
     accept: function(record)
     {
         return !this._hiddenRecords[record.type];
     },
 
     __proto__: WebInspector.TimelineModel.Filter.prototype
 }