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}