HTMLOptionsCollection remove() argument should be long, not unsigned long

LayoutTests/fast/js/select-options-remove-expected.txt

Index: LayoutTests/fast/js/select-options-remove-expected.txt
diff --git a/LayoutTests/fast/js/select-options-remove-expected.txt b/LayoutTests/fast/js/select-options-remove-expected.txt
index dff5917960dddfefd7541df3d8053f4ad9b58d7c..da2c920e23b1de429d151f8e17e06c76ffd070fa 100644
--- a/LayoutTests/fast/js/select-options-remove-expected.txt
+++ b/LayoutTests/fast/js/select-options-remove-expected.txt
@@ -184,6 +184,24 @@ PASS select2.parentNode is not null
 PASS select2.remove() is undefined
 PASS select2.parentNode is null
 
+2.18 Remove index -2147483649 from non-empty Options
+PASS select2.options.remove(-2147483649) is undefined
+
+2.19 Remove index -2147483648 from non-empty Options
+PASS select2.options.remove(-2147483648) is undefined
+
+2.20 Remove index -2147483647 from non-empty Options
+PASS select2.options.remove(-2147483647) is undefined
+
+2.21 Remove index 2147483649 from non-empty Options
+PASS select2.options.remove(2147483649) is undefined
+
+2.22 Remove index 2147483648 from non-empty Options
+PASS select2.options.remove(2147483648) is undefined
+
+2.23 Remove index 2147483647 from non-empty Options
+PASS select2.options.remove(2147483647) is undefined
+
 PASS successfullyParsed is true
 
 TEST COMPLETE