See Bug 12687 Comment #9.
Implied with this activity is to file bugs on all tests where WebKit ToT is failing. :)
As long as we are importing the offset tests from Anne's suite, we might as well also grab some of the other related directories. For instance http://dump.testsuite.org/2006/dom/style/offset-more/ , http://dump.testsuite.org/2006/dom/style/client/ , etc. We should also check to with Anne about this.
I'm perfectly happy with you guys importing these tests (and others from testsuite.org). Go ahead!
While these tests are useful, we probably should not try to actually pass them at this point. It is more important to have consistent behavior with other browsers (mostly firefox). Offset properites are not specified anywhere authoritatively as far as I know so passing and failing is pretty subjective.