[WIP] MD Bookmarks Drag and Drop.

chrome/browser/resources/md_bookmarks/util.js

 // Copyright 2017 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.
 
 /**
  * @fileoverview Utility functions for the Bookmarks page.
  */
 
 cr.define('bookmarks.util', function() {
   /**
@@ skipping 49 matching lines @@
         inProgress: false,
         results: [],
       },
       selection: {
         items: {},
         anchor: null,
       },
     };
   }
 
+  function isShowingSearch(state) {
+    return !state.selectedFolder;
+  }
+
   return {
     createEmptyState: createEmptyState,
     getDisplayedList: getDisplayedList,
+    isShowingSearch: isShowingSearch,
     normalizeNodes: normalizeNodes,
   };
 });