While arewefastyet repository's SixSpeed does not include license text, the original SixSpeed is released under MIT license. We can just import it to WebKit tree. Maybe, adjusting the wrapper script to be fit to the original repository is necessary (since the current wrapper script is written for the version in arewefastyet).
https://github.com/kpdecker/six-speed
Created attachment 310633 [details] Patch
Comment on attachment 310633 [details] Patch Thanks, let's land it!
Comment on attachment 310633 [details] Patch Clearing flags on attachment: 310633 Committed r217124: <http://trac.webkit.org/changeset/217124>
All reviewed patches have been landed. Closing bug.