002ef28272
The factory for EchoControl is changed from an rtc::Callback1 to an interface. This avoids using rtc::Callback1 outside of WebRTC. This also makes the EchoControl factory more similar to other factories in the code base. Bug: webrtc:8345 Change-Id: Ie61b9416ed771f8c756326736d17e339eb768469 Reviewed-on: https://webrtc-review.googlesource.com/8900 Reviewed-by: Per Åhgren <peah@webrtc.org> Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20272}