Blink-in-JS: Implement internal APIs exposed only to private scripts

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 b7b9561921eaf4a1efb57417fd0ac2e1e3c27e9b..21c2747c151ce50920308bb99cf2cf54539d53ab 100644
--- a/Source/bindings/scripts/v8_interface.py
+++ b/Source/bindings/scripts/v8_interface.py
@@ -232,12 +232,13 @@ def interface_context(interface):
                   for attribute in interface.attributes]
     context.update({
         'attributes': attributes,
-        'has_accessors': any(attribute['is_expose_js_accessors'] for attribute in attributes),
+        'has_accessors': any(attribute['is_expose_js_accessors'] and attribute['should_be_exposed_to_script'] for attribute in attributes),
         'has_attribute_configuration': any(
              not (attribute['is_expose_js_accessors'] or
                   attribute['is_static'] or
                   attribute['runtime_enabled_function'] or
                   attribute['per_context_enabled_function'])
+             and attribute['should_be_exposed_to_script']
              for attribute in attributes),
         'has_constructor_attributes': any(attribute['constructor_type'] for attribute in attributes),
         'has_per_context_enabled_attributes': any(attribute['per_context_enabled_function'] for attribute in attributes),
@@ -288,7 +289,8 @@ def interface_context(interface):
         if runtime_enabled_function or has_custom_registration:
             custom_registration_methods.append(method)
             continue
-        method_configuration_methods.append(method)
+        if method['should_be_exposed_to_script']:
+            method_configuration_methods.append(method)
 
     for method in methods:
         # The value of the Function object’s “length” property is a Number