GLES1: Link against angle_util_static instead of angle_util. Attempting to work around missing .so on linux bots. BUG=angleproject:2303 Change-Id: I7fabad308afd420987369b460c13c00781113605 Reviewed-on: https://chromium-review.googlesource.com/909028 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>