IDL: Add support for serializer definitions

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

Index: Source/bindings/tests/idls/core/TestInterface.idl
diff --git a/Source/bindings/tests/idls/core/TestInterface.idl b/Source/bindings/tests/idls/core/TestInterface.idl
index e0f6442166650f40053883566812f0d3f9f19f1a..e19b2d5cf7bafaec9174aa545e272c15c3c6eff3 100644
--- a/Source/bindings/tests/idls/core/TestInterface.idl
+++ b/Source/bindings/tests/idls/core/TestInterface.idl
@@ -80,6 +80,7 @@
     deleter boolean (DOMString name);
 
     [NotEnumerable] stringifier;
+    [NotEnumerable, RaisesException] serializer;

[bashi, 2015/03/26 02:26:17]

Just a question: Does this CL support all forms of serializer described in the
spec? Or only following forms?
- serializer
- serializer type identifier()

[Jens Widell, 2015/03/26 05:34:10]

The base parser supports all forms. Thus CL mostly doesn't care what the
definition looks like, but it will allow all forms.

I added one test each for the two output variations this CL supports.

 
     // Per-method [Exposed] annotation support.
     void alwaysExposedMethod();