Extract ArcSupportMessageHost.

chrome/browser/chromeos/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/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 assert(is_chromeos)
@@ skipping 219 matching lines @@
     "arc/arc_service_launcher.cc",
     "arc/arc_service_launcher.h",
     "arc/arc_settings_service.cc",
     "arc/arc_settings_service.h",
     "arc/arc_support_host.cc",
     "arc/arc_support_host.h",
     "arc/arc_tts_service.cc",
     "arc/arc_tts_service.h",
     "arc/arc_wallpaper_service.cc",
     "arc/arc_wallpaper_service.h",
+    "arc/extensions/arc_support_message_host.cc",
+    "arc/extensions/arc_support_message_host.h",

[Luis Héctor Chávez, 2016/10/21 07:50:48]

nit: s/extensions/extension/

[hidehiko, 2016/10/21 10:06:14]

Let me keep as is, since in chrome repo, extensions looks more common.

     "arc/fileapi/arc_content_file_system_async_file_util.cc",
     "arc/fileapi/arc_content_file_system_async_file_util.h",
     "arc/fileapi/arc_content_file_system_backend_delegate.cc",
     "arc/fileapi/arc_content_file_system_backend_delegate.h",
     "arc/fileapi/arc_content_file_system_file_stream_reader.cc",
     "arc/fileapi/arc_content_file_system_file_stream_reader.h",
     "arc/gpu_arc_video_service_host.cc",
     "arc/gpu_arc_video_service_host.h",
     "attestation/attestation_ca_client.cc",
     "attestation/attestation_ca_client.h",
@@ skipping 1361 matching lines @@
     "policy/proto/chrome_device_policy.proto",
     "policy/proto/install_attributes.proto",
   ]
 }
 
 proto_library("attestation_proto") {
   sources = [
     "attestation/attestation_key_payload.proto",
   ]
 }