Shape Detection: Implement FaceDetection on Mac as out-of-process service

services/shape_detection/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("//services/service_manager/public/cpp/service.gni")
+import("//services/service_manager/public/service_manifest.gni")
+
+source_set("lib") {
+  sources = [
+    "face_detection_provider_impl.h",
+    "shape_detection_service.cc",
+    "shape_detection_service.h",
+  ]
+
+  if (is_mac) {
+    sources += [
+      "face_detection_impl_mac.h",
+      "face_detection_impl_mac.mm",
+    ]
+  } else {
+    sources += [ "face_detection_provider_impl.cc" ]
+  }
+
+  deps = [
+    "//mojo/public/cpp/bindings",
+    "//ui/gfx",
+    "//ui/gfx/geometry",
+  ]
+
+  public_deps = [
+    "//base",
+    "//media/capture",
+    "//services/service_manager/public/cpp",
+    "//services/shape_detection/public/interfaces",
+  ]
+
+  data_deps = [
+    ":manifest",
+  ]
+}
+
+service_manifest("manifest") {
+  name = "shape_detection"
+  source = "manifest.json"
+}