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

content/browser/renderer_host/media/video_capture_manager.cc

Index: content/browser/renderer_host/media/video_capture_manager.cc
diff --git a/content/browser/renderer_host/media/video_capture_manager.cc b/content/browser/renderer_host/media/video_capture_manager.cc
index 6af09c0411e1b71cfec71c2d414e2eb4196b9ec2..ff135d6e0c504035aa4108aa59e38426954428f9 100644
--- a/content/browser/renderer_host/media/video_capture_manager.cc
+++ b/content/browser/renderer_host/media/video_capture_manager.cc
@@ -1074,6 +1074,9 @@ void VideoCaptureManager::OnDevicesInfoEnumerated(
   for (const auto& it : devices_info_cache_) {
     devices.emplace_back(it.descriptor);
     descriptors_and_formats.emplace_back(it.descriptor, it.supported_formats);
+  }
+
+  if (!descriptors_and_formats.empty()) {
     MediaInternals::GetInstance()->UpdateVideoCaptureDeviceCapabilities(
         descriptors_and_formats);
   }
@@ -1270,6 +1273,14 @@ void VideoCaptureManager::DoTakePhoto(
                             base::Unretained(device), base::Passed(&callback)));
 }
 
+base::Optional<CameraCalibration> VideoCaptureManager::GetCameraCalibration(
+    const std::string& device_id) {
+  VideoCaptureManager::DeviceInfo* info = GetDeviceInfoById(device_id);
+  if (!info)
+    return base::Optional<CameraCalibration>();
+  return info->descriptor.camera_calibration;
+}
+
 #if defined(OS_ANDROID)
 void VideoCaptureManager::OnApplicationStateChange(
     base::android::ApplicationState state) {