This CL adds a Release method for the FileWrapper class that allows it
to release the wrapped FILE* object without closing it.
Bug: b/155316201
Change-Id: If9ef4345724705dc7c66183f17bd8daadbdd00b6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/174720
Commit-Queue: Per Åhgren <peah@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Niels Moller <nisse@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#31183}