TBR= Bug: webrtc:7494 Change-Id: I41c5cfc6fd57aefaf246816c0ba4094947b9e767 Reviewed-on: https://webrtc-review.googlesource.com/13123 Reviewed-by: Alessio Bazzica <alessiob@webrtc.org> Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20343}