Host fingerprint mojo service within the 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")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
 
 source_set("lib") {
   sources = [
     "device_service.cc",
     "device_service.h",
   ]
 
   deps = [
     "//base",
+    "//services/device/fingerprint",
     "//services/device/power_monitor",
     "//services/device/time_zone_monitor",
     "//services/service_manager/public/cpp",
   ]
 
   if (is_android) {
     sources += [
       "//services/device/android/register_jni.cc",
       "//services/device/android/register_jni.h",
     ]
   }
 }
 
 source_set("tests") {
   testonly = true
 
   sources = [
     "power_monitor/power_monitor_message_broadcaster_unittest.cc",
     "public/cpp/power_monitor/power_monitor_broadcast_source_unittest.cc",
   ]
 
   deps = [
     "//base",
     "//base/test:test_support",
     "//mojo/public/cpp/bindings",
     "//services/device/power_monitor",
     "//services/device/public/cpp/power_monitor",
     "//testing/gtest",
   ]
+
+  if (is_chromeos) {
+    sources += [ "fingerprint/fingerprint_impl_chromeos_unittest.cc" ]
+    deps += [ "//services/device/fingerprint" ]
+  }
 }
 
 service_manifest("manifest") {
   name = "device"
   source = "manifest.json"
 }
 
 if (is_android) {
   android_library("java") {
     java_files = [ "time_zone_monitor/android/java/src/org/chromium/device/time_zone_monitor/TimeZoneMonitor.java" ]
     deps = [
       "//base:base_java",
     ]
   }
 }