Use -E flags in grit_info tool to modify env (previously -E was accepted but unused).
Use -E flags in grit_info tool to modify env (previously -E was accepted but unused).

TBR=phajdan.jr@chromium.org
BUG=None

Review URL: https://codereview.chromium.org/11445012
korusdipl/grit-i18n,skidzen/grit-i18n,qjw/grit-i18n,CrankWheel/grit-i18n,lhopps/grit-i18n,willbittner/grit-i18n,qjw/grit-i18n,megamanfx/grit-i18n,metasmile/grit-i18n,skidzen/grit-i18n,lhopps/grit-i18n,korusdipl/grit-i18n,megamanfx/grit-i18n,joisig/grit-i18n,invalidstatement/grit-i18n,sevansahumIlovemuhammad/grit-i18n,willbittner/grit-i18n,joisig/grit-i18n,metasmile/grit-i18n,sevansahumIlovemuhammad/grit-i18n,invalidstatement/grit-i18n