Gets chrome --mus some what working

chrome/browser/ui/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/chromecast_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 1392 matching lines @@
       "views/ash/chrome_browser_main_extra_parts_ash.cc",
       "views/ash/chrome_browser_main_extra_parts_ash.h",
       "views/ash/tab_scrubber.cc",
       "views/ash/tab_scrubber.h",
       "views/touch_uma/touch_uma_ash.cc",
       "window_sizer/window_sizer_ash.cc",
     ]
     deps += [
       "//ash",
       "//ash:ash_with_content",
+      "//ash/mus:lib",
       "//ash/public/cpp:ash_public_cpp",
       "//ash/resources/vector_icons",
       "//ash/strings",
       "//components/session_manager/core",
       "//components/user_manager",
       "//services/ui/public/cpp",
       "//services/ui/public/interfaces",
       "//ui/app_list/presenter",
       "//ui/app_list/presenter:mojom",
       "//ui/keyboard:mojom",
@@ skipping 2119 matching lines @@
       "test/test_confirm_bubble_model.cc",
       "test/test_confirm_bubble_model.h",
     ]
     deps += [ "//chrome/test:test_support_ui" ]
   }
 
   if (enable_extensions) {
     deps += [ "//extensions/browser" ]
   }
 }