nikiliu/NodeMap — pull request #2 by b1rdex (2012-03-22 02:16:32+00:00)
Title: Prevent building nodemap more than 1 time (closes #1)

I'm not too close with Chrome's extensions so I don't know if background.html is worker for all tabs.
I mean wouldn't it will build just one nodemap and than you can't get it even on other tab.
You have to inspect it first.