ShapeDetection: Add FaceDetectorOptions for fastMode and maxDetectedFaces

third_party/WebKit/public/platform/modules/shapedetection/shapedetection.mojom

 // 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
 
 module blink.mojom;
 
 import "ui/gfx/geometry/mojo/geometry.mojom";
 
 // Since "//ui/gfx/geometry/mojo" is not exposed to blink, we need to declare
 // a wrapper struct, so that gfx.mojom.RectF will not be directly referenced
 // inside Blink, and browser can still use gfx types.
 struct FaceDetectionResult {
   array<gfx.mojom.RectF> boundingBoxes;
 };
 
 struct BarcodeDetectionResult {
   // Barcode or QR extracted contents (see e.g.
   // https://github.com/zxing/zxing/wiki/Barcode-Contents).
   string raw_value;
   gfx.mojom.RectF bounding_box;
 };
 
+struct FaceDetectorOptions {
+  uint32 maxDetectedFaces;
+  bool fastMode;

[mcasas, 2016/11/21 23:19:26]

s/maxDetectedFaces/max_detected_faces/
s/fastMode/fast_mode/

This also applies to l.15, which came up in another
review as having the incorrect case; you can use 
this to change that or a subsequent one, but don't
forget it :)

[xianglu, 2016/11/22 00:59:13]

Done.

+};
+
 interface ShapeDetection {
   // |frame_data| contains tightly packed image pixels in ARGB32 format,
   // row-major order.
   // TODO(mcasas): Consider using mojo::Bitmap here, https://crbug.com/665488.
-  DetectFaces(handle<shared_buffer> frame_data, uint32 width, uint32 height)
+  DetectFaces(handle<shared_buffer> frame_data, uint32 width, uint32 height, FaceDetectorOptions options)
     => (FaceDetectionResult result);
 
   DetectBarcodes(handle<shared_buffer> frame_data, uint32 width, uint32 height)
     => (array<BarcodeDetectionResult> results);
 };