Chromium's buildbot has nice performance plots. To track some metric over time across many versions of your software. It's using a script called plotter.js.
I want to use this on our internal buildbot. However I can't find a definitive source for this script. If I grab a copy I want to be able to monitor for improvements or bug fixes, like if someone updates the script.
I got the entire chromium source and the entire chromium buildbot source and cannot locate this version of plotter.js. I did find one plotter.js here: src\chrome\test\functional\perf\endure_graphs\js but it is entirely different from the one on the web page above.
Any ideas where is the authoritative version of this nifty little script?