51907f641b
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: Idf275495910f651ec35f641611926e62414daa9a Reviewed-on: https://webrtc-review.googlesource.com/23610 Commit-Queue: Oskar Sundbom <ossu@webrtc.org> Reviewed-by: Sami Kalliomäki <sakal@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20972}