Build clang without plugin support.

See bug for details.

Bug: 917404,256342
Change-Id: Ic5fd959f23e77b9194af4faecceeefffe0b924ae
Reviewed-on: https://chromium-review.googlesource.com/c/1387395
Commit-Queue: Nico Weber <thakis@chromium.org>
Reviewed-by: Reid Kleckner <rnk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619595}
9 files changed