Parse "-webkit-columns: auto <length>" properly.

LayoutTests/fast/multicol/columns-shorthand-parsing-2-expected.txt

Index: LayoutTests/fast/multicol/columns-shorthand-parsing-2-expected.txt
diff --git a/LayoutTests/fast/multicol/columns-shorthand-parsing-2-expected.txt b/LayoutTests/fast/multicol/columns-shorthand-parsing-2-expected.txt
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index 0000000000000000000000000000000000000000..4ddf968e1f390ea5779a31f4c269969b624fb561
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+++ b/LayoutTests/fast/multicol/columns-shorthand-parsing-2-expected.txt
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+Test the behavior when 'auto' is part of the 'columns' property value. See http://www.w3.org/TR/css3-multicol/#columns
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS document.getElementById('elm1').style.WebkitColumnWidth is "auto"
+PASS document.getElementById('elm1').style.WebkitColumnCount is "3"
+PASS document.getElementById('elm2').style.WebkitColumnWidth is "10em"
+PASS document.getElementById('elm2').style.WebkitColumnCount is "auto"
+PASS document.getElementById('elm3').style.WebkitColumnWidth is "auto"
+PASS document.getElementById('elm3').style.WebkitColumnCount is "3"
+PASS document.getElementById('elm4').style.WebkitColumnWidth is "10em"
+PASS document.getElementById('elm4').style.WebkitColumnCount is "auto"
+PASS document.getElementById('elm5').style.WebkitColumnWidth is "7em"
+PASS document.getElementById('elm5').style.WebkitColumnCount is "7"
+PASS document.getElementById('elm6').style.WebkitColumnWidth is "7em"
+PASS document.getElementById('elm6').style.WebkitColumnCount is "7"
+PASS document.getElementById('elm7').style.WebkitColumnWidth is "auto"
+PASS document.getElementById('elm7').style.WebkitColumnCount is "auto"
+PASS document.getElementById('elm8').style.WebkitColumnWidth is "auto"
+PASS document.getElementById('elm8').style.WebkitColumnCount is "auto"
+PASS document.getElementById('elm9').style.WebkitColumnCount is "initial"
+PASS document.getElementById('elm9').style.WebkitColumnWidth is "initial"
+PASS document.getElementById('elm10').style.WebkitColumnCount is "auto"
+PASS document.getElementById('elm10').style.WebkitColumnWidth is "auto"
+PASS document.getElementById('elm11').style.WebkitColumnCount is "inherit"
+PASS document.getElementById('elm11').style.WebkitColumnWidth is "inherit"
+PASS document.getElementById('elm12').style.WebkitColumnCount is "auto"
+PASS document.getElementById('elm12').style.WebkitColumnWidth is "auto"
+PASS document.getElementById('elm13').style.WebkitColumnCount is "7"
+PASS document.getElementById('elm13').style.WebkitColumnWidth is "initial"
+PASS document.getElementById('elm14').style.WebkitColumnCount is "initial"
+PASS document.getElementById('elm14').style.WebkitColumnWidth is "7em"
+PASS successfullyParsed is true
+
+TEST COMPLETE
+