Correct const accessors in base/values.(h|cc), Part II (ListValue)

chrome/browser/custom_handlers/protocol_handler_registry.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/custom_handlers/protocol_handler_registry.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 816 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   std::vector<const DictionaryValue*> result;
   PrefService* prefs = profile_->GetPrefs();
   if (!prefs->HasPrefPath(pref_name)) {
     return result;
   }
 
   const ListValue* handlers = prefs->GetList(pref_name);
   if (handlers) {
     for (size_t i = 0; i < handlers->GetSize(); ++i) {
-      DictionaryValue* dict;
+      const DictionaryValue* dict;
       if (!handlers->GetDictionary(i, &dict))
         continue;
       if (ProtocolHandler::IsValidDict(dict)) {
         result.push_back(dict);
       }
     }
   }
   return result;
 }
 
@@ skipping 11 matching lines @@
 }
 
 net::URLRequestJobFactory::Interceptor*
     ProtocolHandlerRegistry::CreateURLInterceptor() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   // this is always created on the UI thread (in profile_io's
   // InitializeOnUIThread. Any method calls must be done
   // on the IO thread (this is checked).
   return new URLInterceptor(core_);
 }