diff --git a/protos_overrides/launcher_atom_extension.proto b/protos_overrides/launcher_atom_extension.proto
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+++ b/protos_overrides/launcher_atom_extension.proto
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+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+syntax = "proto2";
+
+option java_package = "com.android.launcher3.logger";
+option java_outer_classname = "LauncherAtomExtensions";
+
+
+// This proto file contains placeholder messages that can be overridden by
+// other Launcher variants.
+// Variants could have its own launcher_atom_extension.proto file(should have
+// same messages declared here but with different implementation); when building
+// variant's apk launcher_atom.proto will reference variant's extension file,
+// essentially overriding this file.
+
+
+// Wrapper message for additional containers used in variants.
+message ExtendedContainers {}