We've finished implementing drawSystemFocusRing and drawCustomFocusRing in Chrome. Try it in Chrome 31 or higher (either canary or dev channel should work today). You'll need to go to chrome://flags and enable *experimental canvas features*, then restart the browser.
Here's a demo I built that uses drawSystemFocusRing: http://dmazzoni-google.github.io/canvas-focus-ring-demo/ - Dominic
