tree 019c7f4a47ba9101f62c6fcadd9c4cbcf5d18836
parent 851481cfaadfd758119396e6403aaefb13be6d7d
author kwiberg <kwiberg@webrtc.org> 1505935062 -0700
committer Commit Bot <commit-bot@chromium.org> 1505935062 +0000

Remove backwards compatibilty header for Optional

BUG=webrtc:8205

Review-Url: https://codereview.webrtc.org/3011963002
Cr-Commit-Position: refs/heads/master@{#19906}