This is a reland of e23a9e8f41 Original change's description: > Add completion callbacks to RTCCameraVideoCapturer start/stop operations > > Bug: webrtc:8696 > Change-Id: I327ce11632fd0c71e28411d260094e87ede6b6b6 > Reviewed-on: https://webrtc-review.googlesource.com/37021 > Reviewed-by: Kári Helgason <kthelgason@webrtc.org> > Reviewed-by: Anders Carlsson <andersc@webrtc.org> > Commit-Queue: Anders Carlsson <andersc@webrtc.org> > Cr-Commit-Position: refs/heads/master@{#21546} Bug: webrtc:8696 Change-Id: I48b4d140d870c9924ef0d76f4d282ff13951e083 Reviewed-on: https://webrtc-review.googlesource.com/38800 Reviewed-by: Kári Helgason <kthelgason@webrtc.org> Commit-Queue: Anders Carlsson <andersc@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21592}
e23a9e8f41