Correct const accessors in base/values.(h|cc)

chrome/browser/chromeos/cros/onc_network_parser.cc

 // 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.
 
 #include "chrome/browser/chromeos/cros/onc_network_parser.h"
 
 #include <keyhi.h>
 #include <pk11pub.h>
 
 #include "base/base64.h"
@@ skipping 603 matching lines @@
   value.GetAsDictionary(&dict);
   for (DictionaryValue::key_iterator iter = dict->begin_keys();
        iter != dict->end_keys(); ++iter) {
     const std::string& key = *iter;
 
     // Recommended keys are only of interest to the UI code and the UI reads it
     // directly from the ONC blob.
     if (key == onc::kRecommended)
       continue;
 
-    base::Value* inner_value = NULL;
+    const base::Value* inner_value = NULL;
     dict->GetWithoutPathExpansion(key, &inner_value);
     CHECK(inner_value != NULL);
     int field_index;
     for (field_index = 0; signature[field_index].field != NULL; ++field_index) {
       if (key == signature[field_index].field)
         break;
     }
     if (signature[field_index].field == NULL) {
       LOG(WARNING) << network->name() << ": unexpected field: "
                    << key << ", in type: " << onc_type;
@@ skipping 1376 matching lines @@
     // on the value of AuthenticationType.
     { "L2TP-IPsec", PROVIDER_TYPE_L2TP_IPSEC_PSK },
     { "OpenVPN", PROVIDER_TYPE_OPEN_VPN },
   };
   CR_DEFINE_STATIC_LOCAL(EnumMapper<ProviderType>, parser,
       (table, arraysize(table), PROVIDER_TYPE_MAX));
   return parser.Get(type);
 }
 
 }  // namespace chromeos