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

extensions/browser/api/storage/settings_test_util.cc

Index: extensions/browser/api/storage/settings_test_util.cc
diff --git a/extensions/browser/api/storage/settings_test_util.cc b/extensions/browser/api/storage/settings_test_util.cc
index 0521d235d95c8082863c6a3c8cd2960865ed83e4..1a363fabfe778d054f0d9b6ba1ca3d8d8236985a 100644
--- a/extensions/browser/api/storage/settings_test_util.cc
+++ b/extensions/browser/api/storage/settings_test_util.cc
@@ -74,7 +74,7 @@ scoped_refptr<const Extension> AddExtensionWithIdAndPermissions(
   std::unique_ptr<base::ListValue> permissions(new base::ListValue());
   for (std::set<std::string>::const_iterator it = permissions_set.begin();
       it != permissions_set.end(); ++it) {
-    permissions->Append(new base::StringValue(*it));
+    permissions->AppendString(*it);
   }
   manifest.Set("permissions", permissions.release());