Implement cross-origin attributes using access check interceptors.

third_party/WebKit/Source/bindings/templates/attributes.cpp.tmpl

 {% from 'utilities.cpp.tmpl' import declare_enum_validation_variable, v8_value_to_local_cpp_value %}
 
 {##############################################################################}
 {% macro attribute_getter(attribute, world_suffix) %}
 static void {{attribute.name}}AttributeGetter{{world_suffix}}(
 {%- if attribute.is_data_type_property %}
 const v8::PropertyCallbackInfo<v8::Value>& info
 {%- else %}
 const v8::FunctionCallbackInfo<v8::Value>& info
 {%- endif %}) {
@@ skipping 241 matching lines @@
   {% endif %}
 
   v8ConstructorAttributeGetter(property, info);
 }
 {% endmacro %}
 
 
 {##############################################################################}
 {% macro attribute_setter(attribute, world_suffix) %}
 static void {{attribute.name}}AttributeSetter{{world_suffix}}(
-{%- if attribute.is_data_type_property %}
+{%- if attribute.has_cross_origin_setter %}
+v8::Local<v8::Value> v8Value, const V8CrossOriginSetterInfo& info
+{%- elif attribute.is_data_type_property %}
 v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info
 {%- else %}
 v8::Local<v8::Value> v8Value, const v8::FunctionCallbackInfo<v8::Value>& info
 {%- endif %}) {
   {% filter format_remove_duplicates(['ExceptionState exceptionState']) %}
   {% set define_exception_state -%}
   ExceptionState exceptionState(info.GetIsolate(), ExceptionState::SetterContext, "{{interface_name}}", "{{attribute.name}}");
   {%- endset %}
 
   {% if attribute.is_lenient_this %}
@@ skipping 132 matching lines @@
   {% if attribute.is_ce_reactions %}
   CEReactionsScope ceReactionsScope;
   {% endif %}
 
   {% if attribute.is_custom_element_callbacks or attribute.is_reflect %}
   V0CustomElementProcessingStack::CallbackDeliveryScope deliveryScope;
   {% endif %}
 
   {% if attribute.has_custom_setter %}
   {{v8_class}}::{{attribute.name}}AttributeSetterCustom(v8Value, info);
+  {% elif attribute.has_cross_origin_setter %}
+  {{cpp_class_or_partial}}V8Internal::{{attribute.name}}AttributeSetter{{world_suffix}}(v8Value, V8CrossOriginSetterInfo(info.GetIsolate(), info.Holder()));

[haraken, 2016/12/08 08:21:02]

You don't need to support {{world_suffix}} since [CrossOrigin] doesn't support
per-world bindings.

[dcheng, 2016/12/08 09:04:10]

Done.

   {% else %}
   {{cpp_class_or_partial}}V8Internal::{{attribute.name}}AttributeSetter{{world_suffix}}(v8Value, info);
   {% endif %}
 }
 {% endmacro %}
 
 
 {##############################################################################}
 {% macro attribute_getter_implemented_in_private_script(attribute) %}
 bool {{v8_class}}::PrivateScript::{{attribute.name}}AttributeGetter(LocalFrame* frame, {{cpp_class}}* holderImpl, {{attribute.cpp_type}}* result) {
@@ skipping 96 matching lines @@
        cached_accessor_callback,
        wrapper_type_info,
        access_control,
        property_attribute,
        only_exposed_to_private_script,
        property_location(attribute),
        holder_check,
    ] %}
 {{'{'}}{{attribute_configuration_list | join(', ')}}{{'}'}}
 {%- endmacro %}