Add "The Android Open Source Project" NOTICE and headers

BUG:24569791

Change-Id: Ia80e783c617220dda2c04aa48284daf236dd6c72
diff --git a/buffet/weave_error_conversion.h b/buffet/weave_error_conversion.h
index 2240c3a..17a3487 100644
--- a/buffet/weave_error_conversion.h
+++ b/buffet/weave_error_conversion.h
@@ -1,6 +1,16 @@
-// Copyright 2015 The Chromium OS Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
+// Copyright 2015 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.
 
 #ifndef BUFFET_WEAVE_ERROR_CONVERSION_H_
 #define BUFFET_WEAVE_ERROR_CONVERSION_H_