shapedetection module: Introduce basic structure for face detection

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

Index: third_party/WebKit/Source/modules/shapedetection/Detector.idl
diff --git a/third_party/WebKit/Source/modules/shapedetection/Detector.idl b/third_party/WebKit/Source/modules/shapedetection/Detector.idl
new file mode 100644
index 0000000000000000000000000000000000000000..6a7f8dc31e4fd9b0d2d0369488cdb26ae94889e5
--- /dev/null
+++ b/third_party/WebKit/Source/modules/shapedetection/Detector.idl
@@ -0,0 +1,12 @@
+// 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/#api
+
+[
+    Exposed=(Window,Worker),
+    RuntimeEnabled=ShapeDetection,
+] interface Detector {
+    [CallWith=ScriptState] Promise<sequence<DetectedObject>> detect(HTMLImageElement htmlImageElement);
+};