Media Capture Depth Stream Extensions API: focal length and depth range.

content/public/common/media_stream_request.h

Index: content/public/common/media_stream_request.h
diff --git a/content/public/common/media_stream_request.h b/content/public/common/media_stream_request.h
index 07a4e1af114d6adf49e2d65b1982c7ac1c1de92c..f99c43110874b245b68320c5226eb05a0fac5ce6 100644
--- a/content/public/common/media_stream_request.h
+++ b/content/public/common/media_stream_request.h
@@ -15,6 +15,7 @@
 #include "base/callback_forward.h"
 #include "content/common/content_export.h"
 #include "media/base/audio_parameters.h"
+#include "media/capture/video/video_capture_device_descriptor.h"
 #include "ui/gfx/native_widget_types.h"
 #include "url/gurl.h"
 
@@ -77,6 +78,9 @@ enum MediaStreamRequestResult {
   NUM_MEDIA_REQUEST_RESULTS
 };
 
+using CameraCalibration =
+    media::VideoCaptureDeviceDescriptor::CameraCalibration;
+
 // Convenience predicates to determine whether the given type represents some
 // audio or some video device.
 CONTENT_EXPORT bool IsAudioInputMediaType(MediaStreamType type);
@@ -164,6 +168,9 @@ struct CONTENT_EXPORT MediaStreamDevice {
   // exists (e.g. webcam w/mic), then the value of this member will be all
   // zeros.
   AudioDeviceParameters matched_output;
+
+  // This field is optional and available only for some camera models.
+  base::Optional<CameraCalibration> camera_calibration;
 };
 
 class CONTENT_EXPORT MediaStreamDevices