[MD Bookmarks] Remove Multiple Selected Items.

chrome/test/data/webui/md_bookmarks/store_test.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.
 
 suite('<bookmarks-store>', function() {
   var store;
   var TEST_TREE;
 
   function replaceStore() {
     store = document.createElement('bookmarks-store');
@@ skipping 485 matching lines @@
     store.fire('select-item', {item: store.displayedList[0]});
     store.fire(
         'select-item', {item: store.displayedList[2], add: true, range: false});
     store.fire(
         'select-item', {item: store.displayedList[4], add: true, range: true});
     assertDeepEquals(
         [true, false, true, true, true],
         store.displayedList.map(i => i.isSelectedItem));
     assertEquals(2, store.anchorIndex_);
   });
+
+  test('deleting multiple selected items', function() {
+    var deleteCount = 0;
+    chrome.bookmarks.removeTree = function() {
+      deleteCount++;
+    };
+    chrome.bookmarks.remove = function() {
+      deleteCount++;
+    };
+
+    store.fire('select-item', {item: store.displayedList[0]});
+    store.fire(
+        'select-item', {item: store.displayedList[2], add: true, range: false});
+    store.fire('remove-item', store.displayedList[2]);
+    assertEquals(2, deleteCount);
+  });
 });