Revert of chromeos: Convert ash VPNDelegate interface to mojo

ash/mus/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.
 
 import("//build/config/ui.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
 import("//tools/grit/repack.gni")
 
@@ skipping 113 matching lines @@
   data_deps = [
     "//ash/touch_hud/mus:touch_hud",
   ]
 
   if (is_chromeos) {
     sources += [
       "network_connect_delegate_mus.cc",
       "network_connect_delegate_mus.h",
       "system_tray_delegate_mus.cc",
       "system_tray_delegate_mus.h",
+      "vpn_delegate_mus.cc",
+      "vpn_delegate_mus.h",
     ]
 
     deps += [
       "//chromeos",
       "//chromeos:power_manager_proto",
       "//device/bluetooth",
       "//ui/chromeos",
     ]
   }
 }
@@ skipping 136 matching lines @@
     "//ui/views/mus",
   ]
 
   data_deps = [
     ":mus",
     "//mash/quick_launch",
   ]
 
   defines = [ "NOTIMPLEMENTED_POLICY=5" ]
 }