GitLab

Make acros-chrome able to use AEC. The code is modified from
audio_manager_chromeos.

BUG=b:172639327

Change-Id: I812d1bef12d02ec96dfc5d84783c63dfdd1cfc68
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2522016
Commit-Queue: Yu-Hsuan Hsu <yuhsuan@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825184}