The doc http://code.google.com/chrome/devtools/docs/elements.html says it supports XPath or CSS selectors, but when I tried, didn\'t seem to work for me.
Any one knows
Just typing xpath expression in the search box should work. It works for me in tip-of-tree build.
The feature seems to be broken in Chrome 11 though, I've filed a bug on this: http://crbug.com/79716