This does not change what AEC functionality is available. However, a client that only uses this interface - and not the submodule pointer accessors - gets simpler code, and is guaranteed not to run any two AECs in tandem. The submodule interface EchoControlMobile is being deprecated in https://webrtc-review.googlesource.com/c/src/+/89392 Bug: webrtc:9535 Change-Id: Id9326074e566be6d8768010fc421c457beff402c Reviewed-on: https://webrtc-review.googlesource.com/89386 Commit-Queue: Sam Zackrisson <saza@webrtc.org> Reviewed-by: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24066}