See https://cs.chromium.org/chromium/src/media/audio/win/core_audio_util_win.h?q=coreaudio&sq=package:chromium&g=0&l=34 for details. Bug: webrtc:9265 Change-Id: I0fd26620d94a81ccced68d81021c39723a5be2cb Reviewed-on: https://webrtc-review.googlesource.com/76900 Reviewed-by: Oskar Sundbom <ossu@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Henrik Andreassson <henrika@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23298}