TimelinePanel: REGRESSIONS: three fixes for TimelineOverviewPane.

Source/devtools/front_end/TimelineModel.js

 /*
  * Copyright (C) 2012 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 339 matching lines @@
      * @return {number}
      */
     maximumRecordTime: function()
     {
         return this._maximumRecordTime;
     },
 
     /**
      * @param {!TimelineAgent.TimelineEvent} record
      */
     _updateBoundaries: function(record)

[pfeldman, 2014/03/04 06:26:52]

This should be called on the WebInspector.TimlineModel.Record instead.

     {
         var startTime = record.startTime;
         var endTime = record.endTime;
 
         if (this._minimumRecordTime === -1 || startTime < this._minimumRecordTime)
             this._minimumRecordTime = startTime;
-        if (this._maximumRecordTime === -1 || endTime > this._maximumRecordTime)
+        if ((this._maximumRecordTime === -1 && endTime) || endTime > this._maximumRecordTime)
             this._maximumRecordTime = endTime;
     },
 
     /**
      * @param {!Object} rawRecord
      * @return {number}
      */
     recordOffsetInMillis: function(rawRecord)
     {
         return rawRecord.startTime - this._minimumRecordTime;
@@ skipping 661 matching lines @@
 WebInspector.TimelineModel._quadFromRectData = function(data)
 {
     if (typeof data["x"] === "undefined" || typeof data["y"] === "undefined")
         return null;
     var x0 = data["x"];
     var x1 = data["x"] + data["width"];
     var y0 = data["y"];
     var y1 = data["y"] + data["height"];
     return [x0, y0, x1, y0, x1, y1, x0, y1];
 }