[DevTools] Fix more frontend compiler errors

third_party/WebKit/Source/devtools/front_end/profiler/CPUProfileFlameChart.js

 /**
  * Copyright (C) 2014 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 196 matching lines @@
         if (ms === 0)
             return "0";
         if (ms < 1000)
             return WebInspector.UIString("%.1f\u2009ms", ms);
         return Number.secondsToString(ms / 1000, true);
     },
 
     /**
      * @override
      * @param {number} entryIndex
-     * @return {?Array<!{title: string, value: (string,!Element)}>}
+     * @return {?Array<!{title: string, value: (string|!Element)}>}
      */
     prepareHighlightedEntryInfo: function(entryIndex)
     {
         var timelineData = this._timelineData;
         var node = this._entryNodes[entryIndex];
         if (!node)
             return null;
 
         var entryInfo = [];
         /**
@@ skipping 536 matching lines @@
     {
         var ratio = window.devicePixelRatio;
         this._overviewCanvas.width = width * ratio;
         this._overviewCanvas.height = height * ratio;
         this._overviewCanvas.style.width = width + "px";
         this._overviewCanvas.style.height = height + "px";
     },
 
     __proto__: WebInspector.VBox.prototype
 }