Import from google3

See google3/third_party/java_src/android_libs/backup/copy.bara.sky.

Project import generated by Copybara.

Exempt-From-Owner-Approval: Ownership was incorrectly given to the Dialer team (b/131880800), but the team members don't actually have CodeReview+2 access.

PiperOrigin-RevId: 246332340
Change-Id: I5488fc9fee9019c69437887f12dda110b85bc9a3