Upgrade libart_lgpl to 2.3.21-r3.

BUG=chromium:900288
TEST=cros_sdk -- egencache --update --repo portage-stable --jobs 32
CQ-DEPEND=CL:1345316

Change-Id: Ie33df66478fb85f2533e597d709f3272e719bea5
Reviewed-on: https://chromium-review.googlesource.com/1351395
Commit-Ready: Tim Zheng <timzheng@chromium.org>
Tested-by: Tim Zheng <timzheng@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
6 files changed