headless: Make API generator more robust against weird enum literals

headless/lib/browser/types_h.template

 // This file is generated
 
 // Copyright (c) 2016 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.
 
 #ifndef HEADLESS_PUBLIC_DOMAINS_TYPES_H_
 #define HEADLESS_PUBLIC_DOMAINS_TYPES_H_
 
 #include "base/optional.h"
@@ skipping 21 matching lines @@
   {% endfor %}
 }  // namespace {{domain.domain}}
 {% endfor %}
 
 {% for domain in api.domains %}
 namespace {{domain.domain | camelcase_to_hacker_style}} {
   {% for type in domain.types %}
     {% if "enum" in type %}
 enum class {{type.id}} {
       {% for literal in type.enum %}
-  {{ literal | dash_to_camelcase | camelcase_to_hacker_style | upper | mangle_enum}}{{',' if not loop.last}}
+  {{ literal | sanitize_literal | dash_to_camelcase | camelcase_to_hacker_style | upper }}{{',' if not loop.last}}
       {% endfor %}
 };
 
     {% endif %}
   {% endfor %}
 }  // namespace {{domain.domain | camelcase_to_hacker_style}}
 
 {% endfor %}
 
 // ------------- Type and builder declarations.
@@ skipping 96 matching lines @@
 };
 
   {% endfor %}
 
 }  // namespace {{domain.domain | camelcase_to_hacker_style}}
 {% endfor %}
 
 }  // namespace headless
 
 #endif  // HEADLESS_PUBLIC_DOMAINS_TYPES_H_