shapedetection module: Introduce basic structure for face detection

third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl

Index: third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl
diff --git a/third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl b/third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl
new file mode 100644
index 0000000000000000000000000000000000000000..32771f8a6b3106b147034a5c9928cff98a858c23
--- /dev/null
+++ b/third_party/WebKit/Source/modules/shapedetection/DetectedFace.idl
@@ -0,0 +1,14 @@
+// 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.
+
+// https://wicg.github.io/shape-detection-api/#face-detection-api
+
+[
+    Constructor,
+    RuntimeEnabled=ShapeDetection,
+] interface DetectedFace {
+    // readonly attribute unsigned long id;
+    // readonly attribute sequence? landmarks;
+};
+DetectedFace implements DetectedObject;