Make GRIT not to generate const struct members

tools/grit/grit/format/resource_map.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 '''This file contains item formatters for resource_map_header and
 resource_map_source files.  A resource map is a mapping between resource names
 (string) and the internal resource ID.'''
 
 import os
@@ skipping 38 matching lines @@
   '''Create the header file for the resource mapping.  This file just declares
   an array of name/value pairs.'''
   return '''\
 // This file is automatically generated by GRIT.  Do not edit.
 
 #include <stddef.h>
 
 #ifndef GRIT_RESOURCE_MAP_STRUCT_
 #define GRIT_RESOURCE_MAP_STRUCT_
 struct GritResourceMap {
-  const char* const name;
+  const char* name;
   int value;
 };
 #endif // GRIT_RESOURCE_MAP_STRUCT_
 
 extern const GritResourceMap %(map_name)s[];
 extern const size_t %(map_name)sSize;
 ''' % { 'map_name': GetMapName(root) }
 
 
 def _FormatSourceHeader(root):
@@ skipping 56 matching lines @@
       yield '  {"%s", %s},\n' % (key, tid)
   yield _FormatSourceFooter(root)
 
 
 def _GetItemName(item):
   return item.attrs['name']
 
 
 def _GetItemPath(item):
   return item.GetInputPath().replace("\\", "/")