Extend ScalarValueString handling to include constructors.

Source/bindings/tests/idls/TestInterfaceConstructor4.idl

Index: Source/bindings/tests/idls/TestInterfaceConstructor4.idl
diff --git a/Source/bindings/tests/idls/TestInterfaceConstructor4.idl b/Source/bindings/tests/idls/TestInterfaceConstructor4.idl
new file mode 100644
index 0000000000000000000000000000000000000000..246f5516054fe27d6b4aa5c8646bd614b3ff533a
--- /dev/null
+++ b/Source/bindings/tests/idls/TestInterfaceConstructor4.idl
@@ -0,0 +1,11 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Test for overload resolution for the string-like ScalarValueString
+// argument.
+[
+    Constructor(TestInterfaceConstructor4 testInterface4Arg),
+    Constructor(ScalarValueString scalarValueStringArg),
+] interface TestInterfaceConstructor4 {
+};