tommi 0473b1dc03 Go back to only using sched_yield on Mac (sigh)
Using sched_yield on Linux seems to be causing RestartingSendStreamPreservesRtpStatesWithRtx/0 to never complete.

BUG=webrtc:7187
TBR=solenberg@webrtc.org

Review-Url: https://codereview.webrtc.org/2732443002
Cr-Commit-Position: refs/heads/master@{#16975}
2017-03-02 16:08:59 +00:00
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