Host fingerprint mojo service within the device service.

services/device/fingerprint/BUILD.gn

+# Copyright 2017 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")
+
+component("fingerprint") {

[blundell, 2017/02/06 14:52:43]

Please restrict the visibility of this target to //services/device ("gn help
visibility").

[xiaoyinh(OOO Sep 11-29), 2017/02/22 00:04:50]

Done.

+  sources = [
+    "fingerprint_export.h",
+    "fingerprint_impl.h",
+    "fingerprint_impl_chromeos.cc",
+    "fingerprint_impl_chromeos.h",
+    "fingerprint_impl_default.cc",
+    "fingerprint_impl_default.h",
+  ]
+
+  defines = [ "SERVICES_DEVICE_FINGERPRINT_IMPLEMENTATION" ]
+
+  deps = [
+    "//base",
+    "//mojo/public/cpp/bindings",
+  ]
+
+  if (is_chromeos) {
+    sources -= [
+      "fingerprint_impl_default.cc",
+      "fingerprint_impl_default.h",
+    ]
+    deps += [
+      "//chromeos",
+      "//dbus",
+    ]
+  }
+
+  public_deps = [
+    "//services/device/public/interfaces",
+  ]
+}