build_packages: Skip rebuilding chrome-icu.

chromeos-base/chrome-icu should only be built when chrome is
also being built. Add chrome-icu to the skipped packages for
revdeps and when forcing chrome prebuilts.

BUG=chromium:1069842, b:154290468
TEST=manual, verified chrome-icu not built from source
TEST=cq

Change-Id: I91383f2182b07f07a7bc728357b93f5d4610ad33
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosutils/+/2152931
Tested-by: Alex Klein <saklein@chromium.org>
Commit-Queue: Chris McDonald <cjmcdonald@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed