weave: fix BUILD.gn

TEST=FEATURES=test emerge-$BOARD libweave # BOARD=betty
BUG=chromium:953642
Exempt-From-Owner-Approval: OWNER approved from the wrong email.

Cq-Depend: chromium:1617059
Change-Id: I137a60b4d0a2cd19276ccc3d68c92070f607d499
Reviewed-on: https://chromium-review.googlesource.com/1729178
Tested-by: Keigo Oka <oka@chromium.org>
Commit-Ready: Keigo Oka <oka@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Reviewed-by: Tatsuhisa Yamaguchi <yamaguchi@chromium.org>
3 files changed