ff610bd2b2
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}