Re-initialize shader translator properly after one shutdown. Because of a local static, we could get stuck and never re-initialize the translator after calling ShFinalize. BUG=344043 Change-Id: Ib4d18da886eac28f3e1bc959a7eadf5b34d9410f Reviewed-on: https://chromium-review.googlesource.com/186975 Reviewed-by: Nicolas Capens <nicolascapens@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/187848