Update ANGLE trybots for move to Clang.
Update ANGLE trybots for move to Clang.

Jobs are being updated in
https://skia-review.googlesource.com/c/skia/+/63080. I left the
QuadroP400 as MSVC for extra coverage, since those jobs still exist.

Change-Id: Iff6a4da9e9cb48322e6f3d3f889a9b5920123732
Reviewed-on: https://skia-review.googlesource.com/63305
Reviewed-by: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>
Commit-Queue: Ben Wagner <3ef7217be91069877d94f7907ce5479000772cd3@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot