MD Bookmarks: Implement search and selection in new data flow system

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() {
   /**
    * @param {!BookmarksPageState} state
    * @return {!Array<string>}
    */
   function getDisplayedList(state) {
-    return assert(state.nodes[assert(state.selectedFolder)].children);
+    if (state.selectedFolder)
+      return assert(state.nodes[state.selectedFolder].children);
+
+    return state.search.results;
   }
 
   /**
    * @param {BookmarkTreeNode} rootNode
    * @return {NodeList}
    */
   function normalizeNodes(rootNode) {
     /** @type {NodeList} */
     var nodeList = {};
     var stack = [];
@@ skipping 19 matching lines @@
 
     return nodeList;
   }
 
   /** @return {!BookmarksPageState} */
   function createEmptyState() {
     return {
       nodes: {},
       selectedFolder: '0',
       closedFolders: {},
+      search: {
+        term: '',
+        inProgress: false,
+        results: [],
+      },
     };
   }
 
   return {
     createEmptyState: createEmptyState,
     getDisplayedList: getDisplayedList,
     normalizeNodes: normalizeNodes,
   };
 });