Artem Titov db622c359b Revert "Delete unused class GlobalMutex"
This reverts commit 5831afb8328cbecdbdbee882280ef907a09d9f31.

Reason for revert: The code is still in use: https://ci.chromium.org/ui/p/webrtc/builders/ci/Win32%20Builder%20(Clang)/10243/overview. It wasn't detected for some reasons.

Original change's description:
> Delete unused class GlobalMutex
>
> Bug: webrtc:13869
> Change-Id: Id3655bdd24630b78e83b606291605a37129fd4bc
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/258131
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Commit-Queue: Niels Moller <nisse@webrtc.org>
> Cr-Commit-Position: refs/heads/main@{#36478}

Bug: webrtc:13869
Change-Id: Id44dd4f8ec31ac9e05fc0ee75b55916e627fd7bf
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/258135
Bot-Commit: rubber-stamper@appspot.gserviceaccount.com <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Artem Titov <titovartem@webrtc.org>
Commit-Queue: Artem Titov <titovartem@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36480}
2022-04-07 13:38:53 +00:00
..
2021-07-27 07:46:32 +00:00
2021-07-27 07:46:32 +00:00