pull in base/stringprintf.h directly Newer libbase has split this out of string_util.h, so we need to explicitly include it now. BUG=chromium-os:25872 TEST=`emerge-x86-alex libcros` works with old & new libbase Change-Id: I73f83ba986d3d171f7e24c944f714d013614d25d Reviewed-on: https://gerrit.chromium.org/gerrit/20200 Reviewed-by: Ryo Hashimoto <[email protected]> Commit-Ready: Mike Frysinger <[email protected]> Tested-by: Mike Frysinger <[email protected]>