Thanks to the massive efforts of Ryosuke Niwa (rniwa), the WebKit project now uses the code from graphs.mozilla.org!
We share all the same front-end code, the major differences are that they have their own backend graphserver and the static dashboard images are generated using the google charts API instead of node.js (makes sense, since their server runs on Google Appengine).
rniwa has been doing fantastic work and contributing tons of great features (while refactoring the code base appropriately), and he started working on this at an excellent time - just as we kicked off the Signal From Noise project which is leading the way to another major evolution of our work on measuring and tracking performance for important Mozilla projects like Firefox, Fennec and B2G.