Mojo C++ bindings: support enum validation.

mojo/public/tools/bindings/generators/cpp_templates/module.cc.tmpl

 // Copyright 2013 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.
 
 {%- if variant -%}
 {%-   set variant_path = "%s-%s"|format(module.path, variant) -%}
 {%- else -%}
 {%-   set variant_path = module.path -%}
 {%- endif %}
 
@@ skipping 73 matching lines @@
 {%-   include "struct_definition.tmpl" %}
 {%- endfor %}
 
 {#--- Union definitions #}
 {%  for union in unions %}
 {%-   include "union_definition.tmpl" %}
 {%- endfor %}
 
 }  // namespace internal
 
-{#--- Enums #}
-{%- from "enum_macros.tmpl" import is_valid_enum_def -%}
-{%- for enum in enums -%}
-  {{is_valid_enum_def(enum, class_name='')}}
-{%- endfor %}
-
 {#--- Struct Constants #}
 {%- for struct in structs %}
 {%-   for constant in struct.constants %}
 {%-     if constant.kind|is_integral_kind %}
 MOJO_STATIC_CONST_MEMBER_DEFINITION const {{constant.kind|cpp_pod_type}} {{struct.name}}::{{constant.name}};
 {%-     else %}
 MOJO_STATIC_CONST_MEMBER_DEFINITION const {{constant.kind|cpp_pod_type}} {{struct.name}}::{{constant.name}} = {{constant|constant_value}};
 {%-     endif %}
 {%-   endfor %}
 {%- endfor %}
@@ skipping 28 matching lines @@
 {%- endif %}
 {%- for namespace in namespaces_as_array|reverse %}
 }  // namespace {{namespace}}
 {%- endfor %}
 
 #if defined(__clang__)
 #pragma clang diagnostic pop
 #elif defined(_MSC_VER)
 #pragma warning(pop)
 #endif