Reviewed by Kent Tamura.

        Refactor by merging tests for ValidityState (patternMismatch and customError)
        https://bugs.webkit.org/show_bug.cgi?id=50802

        * fast/forms/ValidityState-customError-expected.txt: Added.
        * fast/forms/ValidityState-customError.html: Added.
        * fast/forms/ValidityState-customError-001-expected.txt: Removed. Merged to ValidityState-customError-expected.txt.
        * fast/forms/ValidityState-customError-001.html: Removed. Merged to ValidityState-customError.html.
        * fast/forms/ValidityState-customError-002-expected.txt: Removed. Merged to ValidityState-customError-expected.txt.
        * fast/forms/ValidityState-customError-002.html: Removed. Merged to ValidityState-customError.html.
        * fast/forms/ValidityState-customError-003-expected.txt: Removed. Merged to ValidityState-customError-expected.txt.
        * fast/forms/ValidityState-customError-003.html: Removed. Merged to ValidityState-customError.html.
        * fast/forms/ValidityState-customError-004-expected.txt: Removed. Merged to ValidityState-customError-expected.txt.
        * fast/forms/ValidityState-customError-004.html: Removed. Merged to ValidityState-customError.html.
        * fast/forms/ValidityState-patternMismatch-expected.txt: Added.
        * fast/forms/ValidityState-patternMismatch.html: Added.
        * fast/forms/ValidityState-patternMismatch-001-expected.txt: Removed. Merged to ValidityState-patternMismatch-expected.txt.
        * fast/forms/ValidityState-patternMismatch-001.html: Removed. Merged to ValidityState-patternMismatch.html.
        * fast/forms/ValidityState-patternMismatch-002-expected.txt: Removed. Merged to ValidityState-patternMismatch-expected.txt.
        * fast/forms/ValidityState-patternMismatch-002.html: Removed. Merged to ValidityState-patternMismatch.html.
        * fast/forms/ValidityState-patternMismatch-003-expected.txt: Removed. Merged to ValidityState-patternMismatch-expected.txt.
        * fast/forms/ValidityState-patternMismatch-003.html: Removed. Merged to ValidityState-patternMismatch.html.
        * fast/forms/ValidityState-patternMismatch-004-expected.txt: Removed. Merged to ValidityState-patternMismatch-expected.txt.
        * fast/forms/ValidityState-patternMismatch-004.html: Removed. Merged to ValidityState-patternMismatch.html.
        * fast/forms/ValidityState-patternMismatch-005-expected.txt: Removed. Merged to ValidityState-patternMismatch-expected.txt.
        * fast/forms/ValidityState-patternMismatch-005.html: Removed. Merged to ValidityState-patternMismatch.html.
        * fast/forms/ValidityState-patternMismatch-006-expected.txt: Removed. Merged to ValidityState-patternMismatch-expected.txt.
        * fast/forms/ValidityState-patternMismatch-006.html: Removed. Merged to ValidityState-patternMismatch.html.
        * fast/forms/ValidityState-patternMismatch-007-expected.txt: Removed. Merged to ValidityState-patternMismatch-expected.txt.
        * fast/forms/ValidityState-patternMismatch-007.html: Removed. Merged to ValidityState-patternMismatch.html.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@73715 268f45cc-cd09-0410-ab3c-d52691b4dbfc