DevTools: [regression] Folder is not being visually removed from sources section.

third_party/WebKit/Source/devtools/front_end/sources/NavigatorView.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:
  *
  * 1. Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *
@@ skipping 427 matching lines @@
         var target = WebInspector.NetworkProject.targetForUISourceCode(uiSourceCode);
         var frame = this._uiSourceCodeFrame(uiSourceCode);
 
         var parentNode = node.parent;
         this._uiSourceCodeNodes.delete(uiSourceCode);
         parentNode.removeChild(node);
         node = parentNode;
 
         while (node) {
             parentNode = node.parent;
-            if (!parentNode || !node.isEmpty() || !(node instanceof WebInspector.NavigatorFolderTreeNode))
+            if (!parentNode || !node.isEmpty())
+                break;
+            if (!(node instanceof WebInspector.NavigatorGroupTreeNode || node instanceof WebInspector.NavigatorFolderTreeNode))
                 break;
 
             var folderId = this._folderNodeId(project, target, frame, uiSourceCode.origin(), node._folderPath);
             this._subfolderNodes.delete(folderId);
             parentNode.removeChild(node);
             node = parentNode;
         }
     },
 
     reset: function()
@@ skipping 1032 matching lines @@
     {
         if (this._treeElement)
             return this._treeElement;
         this._treeElement = new WebInspector.NavigatorFolderTreeElement(this._navigatorView, this._type, this._title);
         this._treeElement.setNode(this);
         return this._treeElement;
     },
 
     __proto__: WebInspector.NavigatorTreeNode.prototype
 }