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

chrome/browser/metrics/metrics_log.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/metrics/metrics_log.h"
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 801 matching lines @@
   WriteProfilerData(process_data, process_type, profile);
 }
 
 void MetricsLog::WriteAllProfilesMetrics(
     const DictionaryValue& all_profiles_metrics) {
   const std::string profile_prefix(prefs::kProfilePrefix);
   for (DictionaryValue::key_iterator i = all_profiles_metrics.begin_keys();
        i != all_profiles_metrics.end_keys(); ++i) {
     const std::string& key_name = *i;
     if (key_name.compare(0, profile_prefix.size(), profile_prefix) == 0) {
-      DictionaryValue* profile;
+      const DictionaryValue* profile;
       if (all_profiles_metrics.GetDictionaryWithoutPathExpansion(key_name,
                                                                  &profile))
         WriteProfileMetrics(key_name.substr(profile_prefix.size()), *profile);
     }
   }
 }
 
 void MetricsLog::WriteProfileMetrics(const std::string& profileidhash,
                                      const DictionaryValue& profile_metrics) {
   OPEN_ELEMENT_FOR_SCOPE("userprofile");
   WriteAttribute("profileidhash", profileidhash);
   for (DictionaryValue::key_iterator i = profile_metrics.begin_keys();
        i != profile_metrics.end_keys(); ++i) {
-    Value* value;
+    const Value* value;
     if (profile_metrics.GetWithoutPathExpansion(*i, &value)) {
       DCHECK(*i != "id");
       switch (value->GetType()) {
         case Value::TYPE_STRING: {
           std::string string_value;
           if (value->GetAsString(&string_value)) {
             OPEN_ELEMENT_FOR_SCOPE("profileparam");
             WriteAttribute("name", *i);
             WriteAttribute("value", string_value);
           }
@@ skipping 141 matching lines @@
     ProductDataToProto(google_update_metrics.google_update_data,
                        google_update->mutable_google_update_status());
   }
 
   if (!google_update_metrics.product_data.version.empty()) {
     ProductDataToProto(google_update_metrics.product_data,
                        google_update->mutable_client_status());
   }
 #endif  // defined(GOOGLE_CHROME_BUILD) && defined(OS_WIN)
 }