test-util: Move to the new write() output API
test-util: Move to the new write() output API

davidmaxwaterman/crosswalk-app-tools,hgl888/crosswalk-app-tools,davidmaxwaterman/crosswalk-app-tools,baleboy/crosswalk-app-tools,hgl888/crosswalk-app-tools,baleboy/crosswalk-app-tools,crosswalk-project/crosswalk-app-tools,baleboy/crosswalk-app-tools,pozdnyakov/crosswalk-app-tools,pozdnyakov/crosswalk-app-tools,crosswalk-project/crosswalk-app-tools,crosswalk-project/crosswalk-app-tools,shawngao5/crosswalk-app-tools,shawngao5/crosswalk-app-tools