Oskar Sundbom 3f6804d140 Optional: Use nullopt and implicit construction in /test
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

Bug: None
Change-Id: Ifca0183c2675a8d4e74c21b86f1724d9b2c01f5d
Reviewed-on: https://webrtc-review.googlesource.com/23579
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Commit-Queue: Oskar Sundbom <ossu@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21580}
2018-01-11 13:31:01 +00:00
..
2017-11-01 08:03:46 +00:00
2018-01-09 11:00:50 +00:00