[WIP] IDL: Add limited serializer support and use for RTCIceCandidate

Source/bindings/scripts/v8_interface.py

 # Copyright (C) 2013 Google Inc. All rights reserved.
 # coding=utf-8
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 449 matching lines @@
 
             for implicit_method in implicit_methods:
                 if implicit_method['name'] in methods_by_name:
                     # FIXME: Check that the existing method is compatible.
                     continue
                 methods.append(implicit_method)
 
         # FIXME: maplike<> and setlike<> should also imply the presence of a
         # 'size' attribute.
 
+    # Serializer
+    if interface.serializer:
+        serializer = interface.serializer
+        serializer_ext_attrs = serializer.extended_attributes.copy()
+        if serializer.operation:
+            return_type = serializer.operation.idl_type
+            implemented_as = serializer.operation.name
+        else:
+            return_type = IdlType('V8ObjectBuilder')
+            implemented_as = None
+        methods.append(generated_method(
+            return_type=return_type,
+            name='toJSON',
+            extended_attributes=serializer_ext_attrs,
+            implemented_as=implemented_as))
+
     # Stringifier
     if interface.stringifier:
         stringifier = interface.stringifier
         stringifier_ext_attrs = stringifier.extended_attributes.copy()
         if stringifier.attribute:
-            stringifier_ext_attrs['ImplementedAs'] = stringifier.attribute.name
+            implemented_as = stringifier.attribute.name
         elif stringifier.operation:
-            stringifier_ext_attrs['ImplementedAs'] = stringifier.operation.name
+            implemented_as = stringifier.operation.name
+        else:
+            implemented_as = 'toString'
         methods.append(generated_method(
             return_type=IdlType('DOMString'),
             name='toString',
             extended_attributes=stringifier_ext_attrs,
-            implemented_as='toString'))
+            implemented_as=implemented_as))
 
     conditionally_enabled_methods = []
     custom_registration_methods = []
     method_configuration_methods = []
 
     for method in methods:
         # Skip all but one method in each set of overloaded methods.
         if 'overload_index' in method and 'overloads' not in method:
             continue
 
@@ skipping 815 matching lines @@
 
     idl_type = deleter.idl_type
     extended_attributes = deleter.extended_attributes
     is_call_with_script_state = v8_utilities.has_extended_attribute_value(deleter, 'CallWith', 'ScriptState')
     return {
         'is_call_with_script_state': is_call_with_script_state,
         'is_custom': 'Custom' in extended_attributes,
         'is_raises_exception': 'RaisesException' in extended_attributes,
         'name': cpp_name(deleter),
     }