Only depend on libgabi++ for the target toolset.

R=marja@chromium.org

Review URL: https://codereview.chromium.org/20043007

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/icu46@213354 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
1 file changed