tommi 3ba1a8cd1b Revert of Use sched_yield on all POSIX platforms in PlatformThread. (patchset #1 id:1 of https://codereview.webrtc.org/2716683002/ )
Reason for revert:
Reverting this change since it didn't affect the perf regressions we were seeing and actually seems to have caused more regressions as per comment in the bug.

Original issue's description:
> Use sched_yield on all POSIX platforms in PlatformThread.
> (not only MacOS)
>
> This is a test to see if perf regressions we're seeing may be related to the use of nanosleep().
>
> BUG=695438
> TBR=solenberg@webrtc.org
>
> Review-Url: https://codereview.webrtc.org/2716683002 .
> Cr-Commit-Position: refs/heads/master@{#16807}
> Committed: 384498abb5

TBR=solenberg@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=695438

Review-Url: https://codereview.webrtc.org/2712133003
Cr-Commit-Position: refs/heads/master@{#16833}
2017-02-24 17:12:32 +00:00
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