Rename sky/engine/bindings2 to sky/engine/bindings

sky/engine/bindings/scripts/templates/interface_cpp.template

 {% extends 'interface_base_cpp.template' %}
 
 
 {# TODO(terry): Implement setter and deleter too #}
 
 
 {##############################################################################}
 {% block indexed_property_getter %}
 {% if indexed_property_getter and not indexed_property_getter.is_custom %}
   {% set getter = indexed_property_getter %}
@@ skipping 140 matching lines @@
     return;
 fail:
     Dart_ThrowException(exception);
     ASSERT_NOT_REACHED();
 }
 {% endif %}
 {% endblock %}
 
 
 {##############################################################################}