This is a workaround for Windows 7 users sometimes not having the UCRT
required for the new versions of the MS HLSL compiler. It requires a
specific version of the Windows SDK with the old compiler DLL.

Bug: chromium:920704
Change-Id: Id9adb3b9d569272cbd69a8b4fc99dc160d837dbc
Reviewed-on: https://chromium-review.googlesource.com/c/1403254Reviewed-by: Jamie Madill <jmadill@google.com>
Reviewed-by: Bruce Dawson <brucedawson@chromium.org>
Commit-Queue: Jamie Madill <jmadill@google.com>