IDL compiler should generate equalIgnoringASCIICase() for ReflectOnly.

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 166 matching lines @@
 {% else %}
 if ({{cpp_value}}.isEmpty()) {
 {# FIXME: should use [ReflectEmpty] instead; need to change IDL files #}
 {% if reflect_missing %}
     {{cpp_value}} = "{{reflect_missing}}";
 {% else %}
     ;
 {% endif %}
 {% endif %}
 {% for value in reflect_only_values %}
-} else if (equalIgnoringCase({{cpp_value}}, "{{value}}")) {
+} else if (equalIgnoringASCIICase({{cpp_value}}, "{{value}}")) {
     {{cpp_value}} = "{{value}}";
 {% endfor %}
 } else {
     {{cpp_value}} = "{{reflect_invalid}}";
 }
 {% endmacro %}
 
 
 {##############################################################################}
 {% macro attribute_getter_callback(attribute, world_suffix) %}
@@ skipping 323 matching lines @@
        setter_callback_for_main_world,
        wrapper_type_info,
        access_control,
        property_attribute,
        only_exposed_to_private_script,
        property_location(attribute),
        holder_check,
    ] %}
 {{'{'}}{{attribute_configuration_list | join(', ')}}{{'}'}}
 {%- endmacro %}