Rafael Cintron 179d7b28a3 Add WrapSharedHandle to D3D12 backend
WrapSharedHandle uses a HANDLE and an acquire key to create
a Dawn texture object.

A future change will use the acquire key to manage a keyed shared
mutex with Chromium code.

Bug: dawn:27
Change-Id: I1c0ef8d022158abf3f1c6731a37ee3f51632fcf9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/10540
Commit-Queue: Rafael Cintron <rafael.cintron@microsoft.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
2019-09-02 19:19:34 +00:00
..