Introduce Device Service

services/device/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("//services/service_manager/public/cpp/service.gni")
 import("//services/service_manager/public/service_manifest.gni")
 
-service("test_wm") {
+source_set("lib") {
   sources = [
-    "test_wm.cc",
+    "device_service.cc",
+    "device_service.h",
   ]
 
   deps = [
     "//base",
     "//services/service_manager/public/cpp",
-    "//services/ui/public/cpp",
-    "//services/ui/public/interfaces",
-    "//ui/display",
-    "//ui/gfx/geometry/mojo",
   ]
 
   data_deps = [
     ":manifest",
-    "//services/ui",
   ]
 }
 
 service_manifest("manifest") {
-  name = "test_wm"
+  name = "device"
   source = "manifest.json"
 }