I'm working on a new client's website that loads Javascript from a CDN so the Javascript is not embedded or inline with the webpage source. I would like to pause everytime getCurrentPosition() is executed in order to determine which external JS file it is contained in.

I realize I could use other tools to do a string search through the contents of the JS files but I would rather keep to Chrome's debugging tools.

Should I be trying to create a watch expression or is there another way to pin down when and where a certain JS function is fired?