ShapeDetection: implement barcode detection, blink part

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

Index: third_party/WebKit/Source/modules/shapedetection/BarcodeDetector.idl
diff --git a/third_party/WebKit/Source/modules/shapedetection/BarcodeDetector.idl b/third_party/WebKit/Source/modules/shapedetection/BarcodeDetector.idl
new file mode 100644
index 0000000000000000000000000000000000000000..0d3e039569b37521fa8b32ad98683daa91f33711
--- /dev/null
+++ b/third_party/WebKit/Source/modules/shapedetection/BarcodeDetector.idl
@@ -0,0 +1,13 @@
+// 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/#barcode-detection-api
+
+[
+    Constructor,
+    ConstructorCallWith=ScriptState,
+    RuntimeEnabled=ShapeDetection,
+] interface BarcodeDetector {
+    [CallWith=ScriptState] Promise<sequence<DetectedBarcode>> detect(CanvasImageSource image);
+};