adds empty goog namespace.
adds empty goog namespace.

Otherwise, we cannot use closure.lib.d.ts if the ts file has no closure
deps.

angular/clutz,dpurp/clutz,angular/clutz,dpurp/clutz,dpurp/clutz,angular/clutz,rehmsen/clutz,polybuildr/clutz,polybuildr/clutz,rehmsen/clutz,rehmsen/clutz,polybuildr/clutz