Add Goma for all Windows Clang Builds.

Change-Id: I26e75cf6cd865ec6c47b7766679177bfd30387da
Reviewed-on: https://skia-review.googlesource.com/82921
Commit-Queue: Ben Wagner <benjaminwagner@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
5 files changed