Canvas2D Performance: fix the bottleneck of hasInstance during JS binding -- overloading

Source/bindings/scripts/v8_interface.py

Index: Source/bindings/scripts/v8_interface.py
diff --git a/Source/bindings/scripts/v8_interface.py b/Source/bindings/scripts/v8_interface.py
index 9cb32a59af27c5984346bf23bf7c82a820cc6830..2381a310cb9144a269ebe557eabf930fc693912e 100644
--- a/Source/bindings/scripts/v8_interface.py
+++ b/Source/bindings/scripts/v8_interface.py
@@ -753,6 +753,11 @@ def resolution_tests_methods(effective_overloads):
         test = 'V8{idl_type}::hasInstance({cpp_value}, info.GetIsolate())'.format(idl_type=idl_type.base_type, cpp_value=cpp_value)
         yield test, method
 
+    for argument, method in arguments_methods:
+        if argument['idl_type_object'].is_wrapper_type and method['number_of_required_arguments'] == method['number_of_arguments']:

[yunchao, 2014/10/02 10:51:56]

both number_of_required_arguments and number_of_arguments are elements in
method_context. But It reports an error for method['number_of_arguments'],
although method['number_of_required_arguments'] is OK. Three days ago, both of
method['number_of_required_arguments'] and method['number_of_arguments'] are OK.
Do you know why?

+            argument['type_checked_already'] = True
+
+
     # 8. Otherwise: if V is any kind of object except for a native Date object,
     # a native RegExp object, and there is an entry in S that has one of the
     # following types at position i of its type list,