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

services/shape_detection/face_detection_impl.cc

Index: services/shape_detection/face_detection_impl.cc
diff --git a/services/shape_detection/face_detection_impl.cc b/services/shape_detection/face_detection_impl.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a16a3ce4623d4b31611c33737c188edd47adf62a
--- /dev/null
+++ b/services/shape_detection/face_detection_impl.cc
@@ -0,0 +1,11 @@
+// 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.
+
+#include "services/shape_detection/face_detection_impl.h"
+
+namespace shape_detection {
+
+void FaceDetectionImpl::Create(blink::mojom::FaceDetectionRequest request) {}
+
+}  // namespace shape_detection