[MD Bookmarks] Add skeleton for MD Bookmarks.

chrome/test/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 977 matching lines @@
       "data/webui/about_invalidations_browsertest.js",
       "data/webui/accessibility_audit_browsertest.js",
       "data/webui/assertions.js",
       "data/webui/async_gen.js",
       "data/webui/bluetooth_internals_browsertest.js",
       "data/webui/certificate_viewer_dialog_test.js",
       "data/webui/chrome_send_browsertest.js",
       "data/webui/cr_elements/cr_elements_browsertest.js",
       "data/webui/extensions/cr_extensions_browsertest.js",
       "data/webui/history_browsertest.js",
+      "data/webui/md_bookmarks/md_bookmarks_browsertest.js",
       "data/webui/md_downloads/downloads_browsertest.js",
       "data/webui/md_history/md_history_browsertest.js",
       "data/webui/md_user_manager/user_manager_browsertest.js",
       "data/webui/mock4js_browsertest.js",
       "data/webui/net_internals/bandwidth_view.js",
       "data/webui/net_internals/chromeos_view.js",
       "data/webui/net_internals/dns_view.js",
       "data/webui/net_internals/events_view.js",
       "data/webui/net_internals/hsts_view.js",
       "data/webui/net_internals/log_util.js",
@@ skipping 4088 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }