Update cq.cfg for new compile-only builders. This removes the x64 versions of the Windows tests from the ANGLE CQ. They are still available to run as optional try jobs, if we suspect a failure. This should reduce the amount of test duplication while still keeping complete coverage. It also updates the Clang builder to the MSVC builder, since Chrome has switched to Clang by default on Windows, and the clang builder was a deprecated version of the MSVC builder anyway. Bug: chromium:786044 Change-Id: I786fe85dcdaa57b55b0b44244797c9285c577ea2 Reviewed-on: https://chromium-review.googlesource.com/782402 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>