GetSimulcastConfig should never return an empty vector of VideoStreams, because lower layers in the code expect atleast one VideoStream. It should also never be given input of max_streams equal to 0.
Bug: webrtc:8648
Change-Id: I60f59b3b267a732f07001e4c8a7fa64963802887
Reviewed-on: https://webrtc-review.googlesource.com/38061
Commit-Queue: Erik Språng <sprang@webrtc.org>
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21545}