065a52a655
This is an reland of 6f5b0f920af08d66e6b77ee4f91ade5797145368 Relanded after speculative revert without any changes. TBR=ilnik@webrtc.org Original change's description: > Remove rtc::Optional alias and api:optional target > > Update left-overs where old target still was used. > > Bug: webrtc:9078 > Change-Id: I2162c928091fc4ff1dea33a3f03adbe47207d206 > Reviewed-on: https://webrtc-review.googlesource.com/84740 > Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> > Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> > Cr-Commit-Position: refs/heads/master@{#23913} Bug: webrtc:9078 Change-Id: Ia33c6438253c6ec49f45d938e8a3607b51c418be Reviewed-on: https://webrtc-review.googlesource.com/88160 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23941}