Copyright for android-platform-external-jsilver source package in Focal

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0
Source: https://android.googlesource.com/platform/external/jsilver
Upstream-Name: JSilver

Files: *
Copyright: 2016, The Android Open Source Project
           2010-2015, Google Inc.
License: Apache-2.0

Files: debian/*
Copyright: 2016, Kai-Chung Yan 
License: Apache-2.0

License: Apache-2.0
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 .
 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.
 .
 On Debian systems, the full text of the Apache License, Version 2.0
 can be found in the file `/usr/share/common-licenses/Apache-2.0'.