gdbsupport: move run_time_clock::now(user, system) out of run_time_clock It is completely unrelated to run_time_clock, so I don't think it makes sense to have it as a static function there. Move it to be a free function named "get_run_time". Change-Id: I0c3e4d3cc44ca37e523c94d72f7cd66add95645e Approved-By: Tom Tromey <tom@tromey.com>