bindings: Adds DOMArrayBuffer, etc. as thin wrappers for ArrayBuffer, etc.

Source/bindings/tests/idls/core/ArrayBuffer.idl

Index: Source/bindings/tests/idls/core/ArrayBuffer.idl
diff --git a/Source/bindings/tests/idls/core/ArrayBuffer.idl b/Source/bindings/tests/idls/core/ArrayBuffer.idl
new file mode 100644
index 0000000000000000000000000000000000000000..7878c5798f3dd816afc4deb065c99d409950be3b
--- /dev/null
+++ b/Source/bindings/tests/idls/core/ArrayBuffer.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.
+
+// https://www.khronos.org/registry/typedarray/specs/latest/#ARRAYBUFFER
+
+[
+    ImplementedAs=TestArrayBuffer,
+] interface ArrayBuffer {
+    readonly attribute unsigned long byteLength;
+};