Maybe I am seeing something like this.
I'm not sure if it's Chrome or Gnome but something on my machine has a massive intermittent memory leak. The machine (not just chrome) has occasionally frozen up for a few seconds over the past week only to come back to normal on its own. When it did this the other day I happened to have the system monitor open and I could see all 32GB of ram getting used then my 15GB swap going, then finally a chrome window closed and reopened on its own and everything came back.
Not sure if the chrome window thing was just coincidence or it was just what got killed when the system ran out of ram.
Your mother ate my dog!