SVGStyledElement::resolveStyle(RenderStyle*) must be removed!
It shouldn't be necessary now that we have (and use) RenderSVGHiddenContainer (to hold style across things like <defs>). If a filter element doesn't otherwise have style in those cases than it probably isn't "valid" SVG and shouldn't be rendered.
It is *possible* that this method may need to exist (to force a manual style resolve for a display:none SVG tree or the like) but in that case it needs to be improved (to walk the whole parent chain instead of the current only check the parent).
Created attachment 93312 [details]
Committed r86365: <http://trac.webkit.org/changeset/86365>