In particular:
* Trying to remove a VideoSink that was not attached should be a no-op.
* Trying to remove a null VideoSink should be a no-op.
* Adding the same VideoSink multiple times should a no-op, and should
not create duplicate native VideoSinks.
* Trying to add a null VideoSink should throw an exception in the Java
layer instead of crashing in native code.
This CL also adds tests that verify these behaviors.
Bug: webrtc:9403
Change-Id: I928b7bb7f683634e287d7fec9e26f4179f73c150
Reviewed-on: https://webrtc-review.googlesource.com/83322
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Reviewed-by: Paulina Hensman <phensman@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23602}
b7700d370d