Sealing of Criminal History Records; Provides that persons adjudicated guilty of certain misdemeanor offenses are eligible to petition court to seal criminal history record of such offenses; provides that persons previously adjudicated guilty of certain misdemeanor offenses are eligible to petition court to seal subsequent criminal history record; revises certain eligibility criteria to provide that person is eligible to petition court to seal criminal history record if such person is no longer serving sentence to which petition to seal pertains; revises certain eligibility criteria to provide that person is eligible to petition court to seal criminal history record if such person has never secured prior sealing or expunction relating to offense for which person was adjudicated guilty; authorizing court to order sealing of criminal history record pertaining to more than one adjudication of guilt if additional adjudications directly relate to original arrest, incident of criminal activity, or adjudication of guilt; provides requirements for certain persons who seek sealing of criminal history record relating to offense for which adjudication was withheld; provides requirements for certain persons who seek sealing of criminal history record relating to offense for which person was adjudicated guilty; defines "conviction."