[MD Bookmarks] Deselect items when clicking outside the bookmark card.

chrome/browser/resources/md_bookmarks/actions.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 Module for functions which produce action objects. These are
  * listed in one place to document available actions and their parameters.
  */
 
 cr.define('bookmarks.actions', function() {
@@ skipping 80 matching lines @@
     };
   }
 
   /** @return {!Action} */
   function clearSearch() {
     return {
       name: 'clear-search',
     };
   }
 
+  /** @return {!Action} */
+  function deselectItems() {
+    return {
+      name: 'deselect-items',
+    };
+  }
+
   /**
    * @param {string} id
    * @param {boolean} add
    * @param {boolean} range
    * @param {BookmarksPageState} state
    * @return {!Action}
    */
   function selectItem(id, add, range, state) {
     var anchor = state.selection.anchor;
     var toSelect = [];
@@ skipping 46 matching lines @@
   function setSearchResults(ids) {
     return {
       name: 'finish-search',
       results: ids,
     };
   }
 
   return {
     changeFolderOpen: changeFolderOpen,
     clearSearch: clearSearch,
+    deselectItems: deselectItems,
     editBookmark: editBookmark,
     moveBookmark: moveBookmark,
     refreshNodes: refreshNodes,
     removeBookmark: removeBookmark,
     selectFolder: selectFolder,
     selectItem: selectItem,
     setSearchResults: setSearchResults,
     setSearchTerm: setSearchTerm,
   };
 });