philipel 29f730ebd8 Release the critial section between recursive calls in FrameBuffer::NextFrame.
This is a revert of https://codereview.webrtc.org/2749563002 and a fix to not
keep the lock in between recursive calls.

BUG=webrtc:7331

Review-Url: https://codereview.webrtc.org/2750033002
Cr-Commit-Position: refs/heads/master@{#17256}
2017-03-15 15:10:08 +00:00
..
2016-09-10 05:40:34 +00:00
2016-11-16 19:11:38 +00:00