AT&T Galaxy S5 rooted. Should work on Verizon.
Thanks to Pinkie Pie for the vuln, ricky for methodology help, and Chainfire for the persist.
If you want to listen to me rap, I might be able to help you with that. See link.
I'm turning up the volume really loud without a dialog box.
Go ahead, try to exploit that vuln on the GS5 yourself. It's tons of fun. 4 days to root. Firefox < GS5 < Chromebook