Is useful for app that has parts in java and parts in native,
that can pass down native pointer rather than java object,
and get the native pointer using up-call.
Many/most other objects expose their native pointer
for these use cases.
BUG=None
Change-Id: I352d4de388525abb09733d38b6af6651770d0498
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/307460
Reviewed-by: Xavier Lepaul <xalep@webrtc.org>
Commit-Queue: Jonas Oreland <jonaso@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#40203}
267040e29a