MD refresh spec catchup: disabled combo boxes

Uses the enabled color at 38% rather than the disabled button color from typography provider.

Bug: 922846

Change-Id: I0b03574b07d95c22b6dec7e3ea82c3e709666cec
Reviewed-on: https://chromium-review.googlesource.com/c/1412996
Reviewed-by: Michael Wasserman <msw@chromium.org>
Commit-Queue: Leonard Grey <lgrey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#624905}
1 file changed