title: Building coverage tool for chrome developer tools
body: <p>I'm looking to extend dev tools in chrome to support 'what-just-ran'. Something like this - you click a record button, do something on the web page, and stop recording. In dev tools, it should show what part of the code ran - like dynamic code coverage. From what I read on the docs, there isn't any direct way. I have been hacking around with dev-front-end (source for developer tools) by setting breakpoints on every line and finding what line executed, that's about how far I could go. Is this project possible with current chrome extension APIs or even dev front end changes? </p>