tree 253c731869cfccf6465d94ea9e3f298d359608e4
parent c71dfaffce5fb3cdb18a27d12f5578f6a3b20fef
author Suraj Malhotra <surajmalhotra@google.com> 1544752801 -0800
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1544812592 +0000

[fbl][unique_fd] Add duplicate call.

This is a fairly common lifecycle management operation.

Tested: runtests -t fbl-test
Change-Id: I0ea7cfb81f1df1d338b4aa66f97f4fd71c260adc