Remove ListValue::Append(new {Fundamental,String}Value(...)) pattern in //components

components/flags_ui/pref_service_flags_storage.cc

Index: components/flags_ui/pref_service_flags_storage.cc
diff --git a/components/flags_ui/pref_service_flags_storage.cc b/components/flags_ui/pref_service_flags_storage.cc
index 3932ded4a22125f1a39cd9382a091f486c0ac84b..3c6ddc4dd778abad2c0f0c7e889ec272ce799c0c 100644
--- a/components/flags_ui/pref_service_flags_storage.cc
+++ b/components/flags_ui/pref_service_flags_storage.cc
@@ -42,7 +42,7 @@ bool PrefServiceFlagsStorage::SetFlags(const std::set<std::string>& flags) {
   experiments_list->Clear();
   for (std::set<std::string>::const_iterator it = flags.begin();
        it != flags.end(); ++it) {
-    experiments_list->Append(new base::StringValue(*it));
+    experiments_list->AppendString(*it);
   }
 
   return true;