rooting - Can I get root access on my Nexus 4 without installing custom bootloader, recovery or ROM?

I own a Nexus 4 device and I want to just get root access on my phone so that I can install applications such as AdBlock etc.

I was able to find tutorials online guiding how to root the Nexus phone. But in all those they flash a custom recovery and have to install a custom ROM.

I don't want to install any custom recovery or ROM.

Is it possible to just root my phone without doing those?