mojo: Generate top level enums for python bindings.

mojo/public/tools/bindings/generators/python_templates/module.py.tmpl

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
+
+import mojo.bindings.reflection as _reflection
 {% if imports %}
 
 {% for import in imports %}
 import {{import.python_module}}
 {% endfor %}
 {% endif %}
 {#--- Constants #}
 {% if module.constants %}
 
 {% for constant in module.constants %}
 {{constant|name}} = {{constant.value|expression_to_text}}
 {% endfor %}
 {% endif %}
+{% for enum in module.enums %}
+
+class {{enum.name}}(object):
+  __metaclass__ = _reflection.MojoEnumType
+  VALUES = [
+{%   for field in enum.fields %}
+    ('{{field.name}}', {{field.computed_value}}),
+{%   endfor %}
+  ]
+{% endfor %}