OSS fix

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I49defdf33502bd2921ef81b8430eb15ed14532a0

cpp/core_v2/internal/internal_payload.cc

@@ -1,3 +1,17 @@
+// Copyright 2020 Google LLC
+//
+// 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
+//
+//     https://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.
+
 #include "core_v2/internal/internal_payload.h"
 
 namespace location {