Reason for revert:
Speculative revert. This CL is a plausible cause for breakages in internal projects.
Original issue's description:
> Removes all uses of FileWrapper in audio_device.
>
> BUG=webrtc:6463
>
> Committed: https://crrev.com/04055e95bf97d106053d90bcc9e974eb4ad175e6
> Cr-Commit-Position: refs/heads/master@{#14811}
TBR=sprang@webrtc.org,henrika@webrtc.org,palmkvist@webrtc.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=webrtc:6463
Review-Url: https://codereview.webrtc.org/2459873002
Cr-Commit-Position: refs/heads/master@{#14822}