Use TimelineUIUtils to create BeginFrame divider

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 95 matching lines @@
      * @param {!WebInspector.TimelineModel} model
      * @param {!WebInspector.Linkifier} linkifier
      * @param {function(!DocumentFragment)} callback
      * @param {boolean} loadedFromFile
      */
     generateDetailsContent: function(record, model, linkifier, callback, loadedFromFile)
     {
         throw new Error("Not implemented.");
     },
     /**
+     * @return {!Element}
+     */
+    createBeginFrameDivider: function()
+    {
+        throw new Error("Not implemented.");
+    },
+    /**
      * @param {string} recordType
      * @param {string=} title
      * @return {!Element}
      */
     createEventDivider: function(recordType, title)
     {
         throw new Error("Not implemented.");
     },
     /**
      * @param {!WebInspector.TimelineModel.Record} record
@@ skipping 512 matching lines @@
         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.linkifyLocation(this._target, stackFrame.url, stackFrame.lineNumber - 1);
             row.appendChild(urlElement);
         }
     }
 }