Image Capture: add |points_of_interest| to mojo and wire it to IDL layer

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

 // 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.
 
 #ifndef ImageCapture_h
 #define ImageCapture_h
 
 #include <memory>
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptPromise.h"
@@ skipping 59 matching lines @@
   DECLARE_VIRTUAL_TRACE();
 
  private:
   ImageCapture(ExecutionContext*, MediaStreamTrack*);
 
   void onPhotoCapabilities(ScriptPromiseResolver*,
                            media::mojom::blink::PhotoCapabilitiesPtr);
   void onSetOptions(ScriptPromiseResolver*, bool);
   void onTakePhoto(ScriptPromiseResolver*, media::mojom::blink::BlobPtr);
   void onCapabilitiesUpdate(media::mojom::blink::PhotoCapabilitiesPtr);
+
+  void onCapabilitiesUpdateInternal(
+      const media::mojom::blink::PhotoCapabilities&);
   void onServiceConnectionError();
 
   Member<MediaStreamTrack> m_streamTrack;
   std::unique_ptr<WebImageCaptureFrameGrabber> m_frameGrabber;
   media::mojom::blink::ImageCapturePtr m_service;
 
   MediaTrackCapabilities m_capabilities;
   MediaTrackConstraintSet m_currentConstraints;
 
+  HeapVector<Point2D> m_currentPointsOfInterest;
+
   HeapHashSet<Member<ScriptPromiseResolver>> m_serviceRequests;
 };
 
 }  // namespace blink
 
 #endif  // ImageCapture_h