Simple dump for Virtual Caemra device

Bug: 301023410
Test: atest VirtualCameraDeviceTest#dump
Change-Id: I917c73c587ea246aeb44f8d6ca0ba03ca43f87dc
diff --git a/services/camera/virtualcamera/util/MetadataUtil.h b/services/camera/virtualcamera/util/MetadataUtil.h
index d0af0c1..ca6f332 100644
--- a/services/camera/virtualcamera/util/MetadataUtil.h
+++ b/services/camera/virtualcamera/util/MetadataUtil.h
@@ -484,6 +484,10 @@
 getPrecaptureTrigger(
     const aidl::android::hardware::camera::device::CameraMetadata& cameraMetadata);
 
+// Returns the virtual device id. This is not the camera id.
+std::optional<int32_t> getDeviceId(
+    const aidl::android::hardware::camera::device::CameraMetadata& cameraMetadata);
+
 }  // namespace virtualcamera
 }  // namespace companion
 }  // namespace android