Just downloaded Contexts - thanks - do you know if there's any way for it to cmd-tab through your Chrome tabs? It looks like it can for Safari from the screen shots.
I haven't found a way to use Contexts to introspect tabs (I suspect it would need some soft of browser extension to do so).
The Quick Tabs extension does a pretty good job if you don't mind invoking it after you get to Chrome.
It's not quite as elegant as finding windows, but it's pretty good.
From anywhere at all:
Contexts: Hold Fn, type "Chr" Chrome: Cmd-E Quick Tabs: Type tab name, Enter