Image Capture: teach takePhoto() to accept an optional PhotoSettings dictionary

third_party/WebKit/Source/modules/imagecapture/ImageCapture.idl

 // 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://w3c.github.io/mediacapture-image/#ImageCaptureAPI
 
 [
     ActiveScriptWrappable,
     ConstructorCallWith=ExecutionContext,
     Constructor(MediaStreamTrack track),
     DependentLifetime,
     MeasureAs=ImageCaptureConstructor,
     RaisesException=Constructor,
     RuntimeEnabled=ImageCapture,
 ] interface ImageCapture {
     [ImplementedAs=videoStreamTrack] readonly attribute MediaStreamTrack track;
 
     [CallWith=ScriptState] Promise<PhotoCapabilities> getPhotoCapabilities();
     [CallWith=ScriptState] Promise<void> setOptions(PhotoSettings photoSettings);
-    [CallWith=ScriptState] Promise<Blob> takePhoto();
+    [CallWith=ScriptState] Promise<Blob> takePhoto(optional PhotoSettings photoSettings);
     [CallWith=ScriptState] Promise<ImageBitmap> grabFrame();
 };