Consolidate IDL test cases (15%: 34 => 29)

Source/bindings/tests/idls/TestSpecialOperations.idl

Index: Source/bindings/tests/idls/TestSpecialOperations.idl
diff --git a/Source/bindings/tests/idls/TestSpecialOperations.idl b/Source/bindings/tests/idls/TestSpecialOperations.idl
new file mode 100644
index 0000000000000000000000000000000000000000..5056ff25369e567c194599aef147a4a4838b69fd
--- /dev/null
+++ b/Source/bindings/tests/idls/TestSpecialOperations.idl
@@ -0,0 +1,12 @@
+// 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.
+
+[
+    OverrideBuiltins,
+] interface TestSpecialOperations {
+    // [ImplementedAs], [StrictTypeChecking], union return, nullability
+    // [OverrideBuiltins] affects named property operations
+    [ImplementedAs=getItem] getter (Node or NodeList) namedItem(DOMString name);
+    [StrictTypeChecking] setter Node (DOMString name, Node? value);
+};