Always include precision in interm output if it's available This helps with debugging precision propagation issues. BUG=angle:787 Change-Id: Ia969481c8d933455cdafef4ae25c6ab3946bc1c2 Reviewed-on: https://chromium-review.googlesource.com/224281 Reviewed-by: Nicolas Capens <capn@chromium.org> Reviewed-by: Shannon Woods <shannonwoods@chromium.org> Tested-by: Shannon Woods <shannonwoods@chromium.org>