Oskar Sundbom ff610bd2b2 Optional: Use nullopt and implicit construction in /ortc
Changes places where we explicitly construct an Optional to instead use
nullopt or the requisite value type only.

This CL was uploaded by git cl split.

TBR=pthatcher@webrtc.org

Bug: None
Change-Id: Idb0e5e038ad59a6021cb53ef10e8f6733b1da05b
Reviewed-on: https://webrtc-review.googlesource.com/23618
Commit-Queue: Oskar Sundbom <ossu@webrtc.org>
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20864}
2017-11-24 11:17:39 +00:00
..
2017-11-15 13:31:51 +00:00
2017-11-10 18:18:55 +00:00