For some reason the home and end keys no longer scroll the source view in the Resources pane in r54084. It works correctly in a build of WebKit from earlier in the week.
Regressions from the switch to canvas based source view.
<rdar://problem/7594370>
Fixed in http://trac.webkit.org/changeset/54133. https://bugs.webkit.org/show_bug.cgi?id=34400