IDL: Support callback interface in overload resolution

third_party/WebKit/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 1089 matching lines @@
     # [constructor(sequence<DOMString> arg), constructor(Dictionary arg)]
     # interface I { ... }
     # (Need to check array types before objects because an array is an object)
     for idl_type, method in idl_types_methods:
         if idl_type.native_array_element_type:
             # (We test for Array instead of generic Object to type-check.)
             # FIXME: test for Object during resolution, then have type check for
             # Array in overloaded method: http://crbug.com/262383
             yield '%s->IsArray()' % cpp_value, method
     for idl_type, method in idl_types_methods:
-        if idl_type.is_dictionary or idl_type.name == 'Dictionary':
-            # FIXME: should be '{1}->IsObject() && !{1}->IsDate() && !{1}->IsRegExp()'.format(cpp_value)
-            # FIXME: the IsDate and IsRegExp checks can be skipped if we've
+        if idl_type.is_dictionary or idl_type.name == 'Dictionary' or idl_type.is_callback_interface:
+            # FIXME: should be '{1}->IsObject() && !{1}->IsRegExp()'.format(cpp_value)
+            # FIXME: the IsRegExp checks can be skipped if we've
             # already generated tests for them.
             yield '%s->IsObject()' % cpp_value, method
 
     # (Check for exact type matches before performing automatic type conversion;
     # only needed if distinguishing between primitive types.)
     if len([idl_type.is_primitive_type for idl_type in idl_types]) > 1:
         # (Only needed if match in step 11, otherwise redundant.)
         if any(idl_type.is_string_type or idl_type.is_enum
                for idl_type in idl_types):
             # 10. Otherwise: if V is a Number value, and there is an entry in S
@@ skipping 263 matching lines @@
     extended_attributes = deleter.extended_attributes
     is_call_with_script_state = v8_utilities.has_extended_attribute_value(deleter, 'CallWith', 'ScriptState')
     is_ce_reactions = 'CEReactions' in extended_attributes
     return {
         'is_call_with_script_state': is_call_with_script_state,
         'is_ce_reactions': is_ce_reactions,
         'is_custom': 'Custom' in extended_attributes,
         'is_raises_exception': 'RaisesException' in extended_attributes,
         'name': cpp_name(deleter),
     }