This reverts commit e76daab8b36f8c2a16d59a116425a3a2f98022f6. Reason for revert: revert required to revert the parent CL Original change's description: > `AgcManagerDirect`: stop enforcing min mic level override with 0 level > > https://webrtc-review.googlesource.com/c/src/+/250141 introduced a bug > due to which the min mic level override is always enforced, if specified > even if the user manually adjusts the mic level to zero. > > This CL fixes that bug, the changes run behind a kill switch. > > TESTED=Test video call on Chromium on Mac; input volume not adjusted after zeroing it from the system preferences UI > > Bug: chromium:1275566 > Change-Id: I18ce2e5970d3002b301f51f84544583c64982d57 > Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/267844 > Reviewed-by: Hanna Silen <silen@webrtc.org> > Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> > Cr-Commit-Position: refs/heads/main@{#37460} Bug: chromium:1275566 Change-Id: I6d22d8f3fafdc7da3814827b9b69146a506595db Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/268468 Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com> Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Cr-Commit-Position: refs/heads/main@{#37515}