Various autoresize fixes.
Created attachment 132006 [details] Patch
Please wait for approval from fishd@chromium.org before submitting because this patch contains changes to the Chromium public API.
Prework for http://code.google.com/p/chromium/issues/detail?id=56693 (and http://code.google.com/p/chromium/issues/detail?id=58816 since I'll like just fix both at the same time).
As note to any reviews, this one shouldn't need Darin's approval because the public WebKit part is simply removing a deprecated api that he already agreed to being deprecated (enableAutoResize with three parameters).
Committed as http://trac.webkit.org/changeset/110875