Expose SENSOR_READOUT_TIMESTAMP characteristic for virtual camera

Bug: 301023410
Bug: 322965201
Test: atest android.hardware.camera2.cts.ReadoutTimestampTest
Test: atest CtsVirtualCameraTest

Change-Id: I6338cc156bd2983b3ee85e37422e15272878801c
diff --git a/services/camera/virtualcamera/util/MetadataBuilder.h b/services/camera/virtualcamera/util/MetadataBuilder.h
index 83dbe2e..fc4d51a 100644
--- a/services/camera/virtualcamera/util/MetadataBuilder.h
+++ b/services/camera/virtualcamera/util/MetadataBuilder.h
@@ -73,6 +73,11 @@
   MetadataBuilder& setLensFacing(
       camera_metadata_enum_android_lens_facing lensFacing);
 
+  // See ANDROID_SENSOR_READOUT_TIMESTAMP in CameraMetadataTag.aidl.
+  MetadataBuilder& setSensorReadoutTimestamp(
+      camera_metadata_enum_android_sensor_readout_timestamp_t
+          sensorReadoutTimestamp);
+
   // See ANDROID_SENSOR_ORIENTATION in CameraMetadataTag.aidl.
   MetadataBuilder& setSensorOrientation(int32_t sensorOrientation);