Split Mandoline-specific components out of mojo:core_services.

mandoline/services/core_services/BUILD.gn

 # Copyright 2015 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.
 #
 # core_services should be thought of as a bundle of many of the services which
 # we ship with.
 
 import("//build/config/ui.gni")
 import("//build/toolchain/toolchain.gni")
 import("//mojo/public/mojo_application.gni")
@@ skipping 58 matching lines @@
       "//components/resource_provider:lib",
       "//mojo/services/network:lib",
     ]
   }
 
   if (is_linux) {
     deps += [ "//components/font_service:lib" ]
   } else {
     sources += [ "application_delegate_factory_default.cc" ]
   }
-
-  if (use_aura) {
-    deps += [
-      "//components/mus/public/cpp",
-      "//mandoline/ui/desktop_ui:lib",
-      "//mandoline/ui/omnibox:lib",
-    ]
-    sources += [ "application_delegate_factory_aura.cc" ]
-  }
 }