DevTools: Do not linkify to pseudo (program) node when there's no URL

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @implements {WebInspector.Searchable}
  * @extends {WebInspector.ProfileView}
  * @param {!WebInspector.SamplingHeapProfileHeader} profileHeader
  */
@@ skipping 290 matching lines @@
      * @return {string}
      */
     formatPercent: function(value, node)
     {
         return WebInspector.UIString("%.2f\u2009%%", value);
     },
 
     /**
      * @override
      * @param  {!WebInspector.ProfileDataGridNode} node
-     * @return {!Element}
+     * @return {?Element}
      */
     linkifyNode: function(node)
     {
         return this._profileView.linkifier().linkifyConsoleCallFrame(this._profileView.target(), node.profileNode.callFrame, "profile-node-file");
     }
 }
 
 /**
  * @constructor
  * @extends {WebInspector.ProfileFlameChartDataProvider}
@@ skipping 103 matching lines @@
          * @param {string} value
          */
         function pushEntryInfoRow(title, value)
         {
             entryInfo.push({ title: title, value: value });
         }
         pushEntryInfoRow(WebInspector.UIString("Name"), WebInspector.beautifyFunctionName(node.functionName));
         pushEntryInfoRow(WebInspector.UIString("Self size"), Number.bytesToString(node.self));
         pushEntryInfoRow(WebInspector.UIString("Total size"), Number.bytesToString(node.total));
         var linkifier = new WebInspector.Linkifier();
-        var text = (new WebInspector.Linkifier()).linkifyConsoleCallFrame(this._target, node.callFrame).textContent;
+        var link = linkifier.linkifyConsoleCallFrame(this._target, node.callFrame);
+        if (link)
+            pushEntryInfoRow(WebInspector.UIString("URL"), link.textContent);
         linkifier.dispose();
-        pushEntryInfoRow(WebInspector.UIString("URL"), text);
         return entryInfo;
     },
 
     __proto__: WebInspector.ProfileFlameChartDataProvider.prototype
 }