Reviewed by Darin.

    Reviewed by Darin.

        <rdar://problem/3943090> REGRESSION (Mail): Spelling underline incompletely erased following certain steps

        * WebCoreSupport.subproj/WebTextRenderer.m:
        (-[WebTextRenderer misspellingLineThickness]):
        (-[WebTextRenderer misspellingLinePatternWidth]):
        Replaced #defines with these methods, so others can get the same info.

        (-[WebTextRenderer drawLineForMisspelling:withWidth:]):
        Keep underline within originally specified bounds.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@8649 268f45cc-cd09-0410-ab3c-d52691b4dbfc