This bricking sounds similar to the first Nexus 10 the Google Play UK store sent me. I could boot it initially, but then the device would spontaneously reboot. Each time, the reboot intervals reduced (and weird graphical glitches started appearing) - within a matter of hours, it was just stuck on the Google logo and never got any further.
It was indeed Google I contacted to return it and they sent me a pre-paid courier wrapper (I had to weigh and measure the Nexus 10 packaging/tablet), but they also charged me for a second Nexus 10 (which they then refunded when the second one was delivered, but it made me uncomfortable to be 656 pounds down for a short period!).
BTW, the courier promptly "lost" my broken first Nexus 10, but I still got the refund for it. The second Nexus 10 has been working fine since, but I've had the odd storage slowdown, prompting me to completely wipe and re-install (it's on CyanogenMod 12 at the moment - I kept the stock ROM for about one day