Appease analyze some more.

Author: ditman

packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/google_maps_flutter_platform_interface.dart

@@ -1,3 +1,7 @@
+// Copyright 2018 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.
+
 export 'src/platform_interface/google_maps_flutter_platform.dart';
 export 'src/types/types.dart';
 export 'src/events/map_event.dart';