CSSGrammer.y should not allow missing closing bracket when it parses querySelector's selector text.

LayoutTests/fast/css/parsing-unexpected-eof.html

Index: LayoutTests/fast/css/parsing-unexpected-eof.html
diff --git a/LayoutTests/fast/css/parsing-unexpected-eof.html b/LayoutTests/fast/css/parsing-unexpected-eof.html
index 698e3149dc46298ab7b41bc0f16de1a729dd1844..442a2362f7ba2c2258bf863ac651219a47311678 100644
--- a/LayoutTests/fast/css/parsing-unexpected-eof.html
+++ b/LayoutTests/fast/css/parsing-unexpected-eof.html
@@ -31,7 +31,7 @@
       test(function(){
         // internal_selector
         rules[0].selectorText = "#x, [name=\"x";
-        assert_equals(rules[0].selectorText, "#x, [name=\"x\"]");
+        assert_equals(rules[0].selectorText, "div");
       }, "Unexpected EOF - CSSStyleRule.selectorText missing ']'");
 
       test(function(){
@@ -42,12 +42,12 @@
 
       test(function(){
         // internal_selector
-        assert_equals(document.querySelector("#qs [class=x").tagName, "I");
+        assert_throws(null, function() { document.querySelector("#qs [class=x").tagName; });
       }, "Unexpected EOF - querySelector missing ']'");
 
       test(function(){
         // internal_selector
-        assert_equals(document.querySelector("#qs :nth-child(2").tagName, "B");
+        assert_throws(null, function() { document.querySelector("#qs :nth-child(2").tagName });
       }, "Unexpected EOF - querySelector missing ')'");
     </script>
   </body>