arc: Revamp the ArcBridgeService interface

ui/arc/BUILD.gn

 # 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.
 
 import("//build/config/ui.gni")
 import("//testing/test.gni")
 
 static_library("arc") {
   sources = [
     "notification/arc_custom_notification_item.cc",
@@ skipping 30 matching lines @@
   testonly = true
   sources = [
     "notification/arc_notification_manager_unittest.cc",
     "test/run_all_unittests.cc",
   ]
 
   deps = [
     ":arc",
     "//base",
     "//base/test:test_support",
+    "//components/arc:arc_base",
     "//components/arc:arc_test_support",
     "//mojo/edk/system",
     "//testing/gtest",
     "//ui/message_center:test_support",
   ]
 }