Add missing linker dependency on advapi32.lib for icuuc target.

R=scottmg@chromium.org

Review URL: https://codereview.chromium.org/297293005

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/icu46@272908 4ff67af0-8c30-449e-8e8b-ad334ec8d88c