This CL ensures that the high-pass filter is on whenever the echo controller is on. This is important as the echo controller code assumes that the external high-pass filter is active. The CL also corrects the ToggleAec unit test (which started failing after this code change). Bug: webrtc:11159,chromium:1030179 Change-Id: Ie29db74bf3de6279a08564398d32d67d5e1569db Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/161222 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29979}