IDL: ArrayBuffer and ArrayBufferView support for union types

Source/core/css/FontFace.idl

Index: Source/core/css/FontFace.idl
diff --git a/Source/core/css/FontFace.idl b/Source/core/css/FontFace.idl
index d83c666b895521d146ba440d5c6622e89552a0d3..0665df83390463004900baf9e26af78ad6ba0ec2 100644
--- a/Source/core/css/FontFace.idl
+++ b/Source/core/css/FontFace.idl
@@ -39,10 +39,8 @@ enum FontFaceLoadStatus {
 
 [
     ActiveDOMObject,
-    // FIXME: should be union type http://crbug.com/240176
-    Constructor(DOMString family, DOMString source, optional FontFaceDescriptors descriptors),
-    Constructor(DOMString family, ArrayBuffer source, optional FontFaceDescriptors descriptors),
-    Constructor(DOMString family, ArrayBufferView source, optional FontFaceDescriptors descriptors),
+    // FIXME: This should be (DOMString or BinaryData), where BinaryData is typedef of (ArrayBuffer or ArrayBufferView)
+    Constructor(DOMString family, (DOMString or ArrayBuffer or ArrayBufferView) source, optional FontFaceDescriptors descriptors),
     ConstructorCallWith=ExecutionContext,
     WillBeGarbageCollected,
 ] interface FontFace {