Change uuid attributes to declspec in winrt. Due to warning C4467: usage of ATL attributes is deprecated Bug: angleproject:3928 Change-Id: I6620acc85ae974445a2a01fc109568fac8c3b23b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2032152 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>