[MD Bookmarks] Add skeleton for MD Bookmarks.

chrome/test/data/webui/md_bookmarks/md_bookmarks_browsertest.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.
+
+/**
+ * @fileoverview Test suite for the Material Design bookmarks page.
+ */
+var ROOT_PATH = '../../../../../';
+
+GEN_INCLUDE(
+    [ROOT_PATH + 'chrome/test/data/webui/polymer_browser_test_base.js']);
+GEN('#include "base/command_line.h"');
+
+function MaterialBookmarksBrowserTest() {}
+
+MaterialBookmarksBrowserTest.prototype = {
+  __proto__: PolymerTest.prototype,
+
+  browsePreload: 'chrome://bookmarks',
+
+  commandLineSwitches: [{switchName: 'enable-features',
+                         switchValue: 'MaterialDesignBookmarks'}],
+
+  /** @override */
+  runAccessibilityChecks: false,

[tsergeant, 2016/12/22 04:33:02]

We copied this from History, which disabled this a while ago because something
was failing. I don't remember the full context, but we probably shouldn't
disable this in Bookmarks -- it might find something useful in the future.

So, delete this property.

[angelayang, 2016/12/28 00:49:38]

Done.

+
+  extraLibraries: PolymerTest.getLibraries(ROOT_PATH).concat([
+    'test_util.js',
+  ]),
+};
+
+function MaterialBookmarksStoreTest() {}
+
+MaterialBookmarksStoreTest.prototype = {
+  __proto__: MaterialBookmarksBrowserTest.prototype,
+
+  extraLibraries: MaterialBookmarksBrowserTest.prototype.extraLibraries.concat([
+    'store_test.js',
+  ]),
+};
+
+TEST_F('MaterialBookmarksStoreTest', 'All', function() {
+  mocha.run();
+});