Bindings: Add ScalarValueString support

LayoutTests/fast/js/webidl-type-mapping-expected.txt

Index: LayoutTests/fast/js/webidl-type-mapping-expected.txt
diff --git a/LayoutTests/fast/js/webidl-type-mapping-expected.txt b/LayoutTests/fast/js/webidl-type-mapping-expected.txt
index a009cc1b643b8b5bb308a4de4cb78bab53046333..9094f1f25043fa663fd700a85f092300c8e76a76 100644
--- a/LayoutTests/fast/js/webidl-type-mapping-expected.txt
+++ b/LayoutTests/fast/js/webidl-type-mapping-expected.txt
@@ -1058,6 +1058,39 @@ PASS converter.testByteStringTreatReturnedNullStringAsNullAttribute is null
 PASS converter.testByteStringTreatReturnedNullStringAsUndefinedAttribute is undefined.
 PASS converter.getTestByteStringTreatReturnedNullStringAsNullMethod() is null
 PASS converter.getTestByteStringTreatReturnedNullStringAsUndefinedMethod() is undefined.
+converter.testScalarValueString = '!@#123ABCabc\x00\x80\xFF\r\n\t'
+PASS converter.testScalarValueString is "!@#123ABCabc\u0000€ÿ\r\n\t"
+converter.testScalarValueString = '\u0100'
+PASS converter.testScalarValueString is "Ā"
+PASS converter.testScalarValueString = {toString: function() { throw Error(); }} threw exception Error.
+PASS converter.testScalarValueString is "Ā"
+converter.testScalarValueString = "���"
+PASS converter.testScalarValueString is "�"
+converter.testScalarValueString = "���"
+PASS converter.testScalarValueString is "�"
+converter.testScalarValueString = "���\u0000"
+PASS converter.testScalarValueString is "�\u0000"
+converter.testScalarValueString = "���\u0000"
+PASS converter.testScalarValueString is "�\u0000"
+converter.testScalarValueString = "������"
+PASS converter.testScalarValueString is "��"
+converter.testScalarValueString = "𝄞"
+PASS converter.testScalarValueString is "𝄞"
+converter.testScalarValueString = true
+PASS converter.testScalarValueString is "true"
+converter.testScalarValueString = 123
+PASS converter.testScalarValueString is "123"
+converter.testScalarValueString = null
+PASS converter.testScalarValueString is "null"
+converter.testScalarValueString = undefined
+PASS converter.testScalarValueString is "undefined"
+PASS converter.setTestScalarValueString('abc') did not throw exception.
+PASS converter.setTestScalarValueStringDefaultNull('abc') did not throw exception.
+PASS converter.setTestScalarValueString('\u0100') did not throw exception.
+PASS converter.setTestScalarValueStringDefaultNull('\u0100') did not throw exception.
+PASS converter.setTestScalarValueString() threw exception TypeError: Failed to execute 'setTestScalarValueString' on 'TypeConversions': 1 argument required, but only 0 present..
+PASS converter.setTestScalarValueStringDefaultNull() did not throw exception.
+PASS converter.testScalarValueString is ""
 PASS successfullyParsed is true
 
 TEST COMPLETE