The Windows 2019 Enterprise SKU is based on RS5 but is missing support
for WGC. This changes adds a function IsWgcSupported which will check
that the API is actually present, which should be more robust than just
performing a version check.
Bug: webrtc:13932
Change-Id: Ib6a2278f316b9b86671df77fd37468c79564d655
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/258163
Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Commit-Queue: Austin Orion <auorion@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#36506}