Implement invalidation tracking in devtools

Source/devtools/front_end/timeline/TimelineUIUtils.js

 /*
  * Copyright (C) 2013 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 544 matching lines @@
      * @param {string} title
      * @param {!Array.<!ConsoleAgent.CallFrame>} stackTrace
      */
     appendStackTrace: function(title, stackTrace)
     {
         if (!this._linkifier || !this._target)
             return;
 
         var rowElement = this.element.createChild("div", "timeline-details-view-row");
         rowElement.createChild("span", "timeline-details-view-row-title").textContent = WebInspector.UIString("%s: ", title);
-        var stackTraceElement = rowElement.createChild("div", "timeline-details-view-row-stack-trace monospace");
+        this.createChildStackTraceElement(rowElement, stackTrace);
+    },
 
+    /**
+     * @param {!Element} parentElement
+     * @param {!Array.<!ConsoleAgent.CallFrame>} stackTrace
+     */
+    createChildStackTraceElement: function(parentElement, stackTrace)
+    {
+        var stackTraceElement = parentElement.createChild("div", "timeline-details-view-row-stack-trace monospace");
         for (var i = 0; i < stackTrace.length; ++i) {
             var stackFrame = stackTrace[i];
             var row = stackTraceElement.createChild("div");
             row.createTextChild(stackFrame.functionName || WebInspector.UIString("(anonymous function)"));
             row.createTextChild(" @ ");
             var urlElement = this._linkifier.linkifyScriptLocation(this._target, stackFrame.scriptId, stackFrame.url, stackFrame.lineNumber - 1, stackFrame.columnNumber - 1);
             row.appendChild(urlElement);
         }
     }
 }