DevTools: Switch network panel back to frame-based filmstrip.

Source/devtools/front_end/network/NetworkPanel.js

 /*
  * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2008, 2009 Anthony Ricaud <rik@webkit.org>
  * Copyright (C) 2011 Google 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 248 matching lines @@
         else
             this._overviewPane.detach();
         this.doResize();
     },
 
     _toggleRecordFilmStrip: function()
     {
         var toggled = this._networkRecordFilmStripSetting.get();
         if (toggled && !this._filmStripRecorder) {
             this._filmStripView = new WebInspector.FilmStripView();
+            this._filmStripView.setMode(WebInspector.FilmStripView.Modes.FrameBased);
             this._filmStripView.element.classList.add("network-film-strip");
             this._filmStripRecorder = new WebInspector.NetworkPanel.FilmStripRecorder(this._filmStripView);
             this._filmStripView.show(this._searchableView.element, this._searchableView.element.firstElementChild);
             this._filmStripView.addEventListener(WebInspector.FilmStripView.Events.FrameSelected, this._onFilmFrameSelected, this);
             this._filmStripView.addEventListener(WebInspector.FilmStripView.Events.FrameEnter, this._onFilmFrameEnter, this);
             this._filmStripView.addEventListener(WebInspector.FilmStripView.Events.FrameExit, this._onFilmFrameExit, this);
         }
 
         if (!toggled && this._filmStripRecorder) {
             this._filmStripView.detach();
@@ skipping 442 matching lines @@
     {
         if (!this._target)
             return;
 
         this._target.tracingManager.stop();
         this._target = null;
         this._callback = callback;
         this._filmStripView.setFetching();
     }
 }