base: Fix the TODO in ListValue::Remove().

chrome/browser/translate/translate_prefs.cc

 // Copyright (c) 2011 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/translate/translate_prefs.h"
 
 #include "base/string_util.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/scoped_user_pref_update.h"
 
@@ skipping 237 matching lines @@
     const std::string& value) {
   bool schedule_save = false;
   {
     ListPrefUpdate update(prefs_, pref_id);
     ListValue* blacklist = update.Get();
     if (!blacklist) {
       NOTREACHED() << "Unregistered translate blacklist pref";
       return;
     }
     StringValue string_value(value);
-    schedule_save = blacklist->Remove(string_value) != -1;
+    schedule_save = blacklist->Remove(string_value, NULL);
   }
   if (schedule_save)
     prefs_->ScheduleSavePersistentPrefs();
 }
 
 bool TranslatePrefs::IsLanguageWhitelisted(
     const std::string& original_language, std::string* target_language) {
   const DictionaryValue* dict = prefs_->GetDictionary(kPrefTranslateWhitelists);
   if (dict && dict->GetString(original_language, target_language)) {
     DCHECK(!target_language->empty());
     return !target_language->empty();
   }
   return false;
 }