Add missing break in StateManagerGL::syncState. BUG=angleproject:2188 Change-Id: I4baae8b13f217769cd10f5e559452ab49350174f Reviewed-on: https://chromium-review.googlesource.com/792173 Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>