Support FormData on WorkerGlobalScope.

Source/bindings/tests/idls/TestInterfaceConstructor2.idl

Index: Source/bindings/tests/idls/TestInterfaceConstructor2.idl
diff --git a/Source/bindings/tests/idls/TestInterfaceConstructor2.idl b/Source/bindings/tests/idls/TestInterfaceConstructor2.idl
index d42461e8dfa83edb872f057d7a3455b60a92ce4a..d4e86d308e408b413f57f270296646b332f063f4 100644
--- a/Source/bindings/tests/idls/TestInterfaceConstructor2.idl
+++ b/Source/bindings/tests/idls/TestInterfaceConstructor2.idl
@@ -41,7 +41,7 @@
     Constructor(
         TestInterfaceEmpty testInterfaceEmptyArg,
         long longArg,
-        [Default=Undefined] optional DOMString defaultUndefinedOptionalStringArg,
+        optional DOMString optionalStringArg,

[Nils Barth (inactive), 2014/04/09 02:12:03]

Shouldn't you *add* a new test case, rather than *replacing* an existing one?
...or are you replacing all uses of
[Default=Undefined] optional DOMString
?

[sof, 2014/04/09 07:31:59]

That makes good sense :) Thought there was coverage elsewhere of that combo, but
not so.

         [Default=NullString] optional DOMString defaultNullStringOptionalStringArg,
         [Default=Undefined] optional Dictionary defaultUndefinedOptionalDictionaryArg),
 ] interface TestInterfaceConstructor2 {