What are the consequences of a writ of habeas corpus application?

On January 28, 2015, defendant filed a petition for a writ of habeas corpus in the trial court, contending that he could not be convicted of first degree murder as an aider and abettor with a natural and probable consequences theory under People v. Chiu (2014) 59 Cal.4th 155. The District Attorney filed a concession brief, agreeing that the petition should be granted. The District Attorney elected not to retry defendant on first degree murder and instead agreed defendant's conviction on count 2 should be reduced from first degree to second degree murder, and that defendant should be resentenced accordingly.