to clearly signal passed ownership. Drop support for accepting nullptr clock to avoid copying the Configuration structure. Update all calls in webrtc to the new factory function Bug: None Change-Id: Ic5a78da8e59ba3988a757a9d9634fa31499ce0db Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/125901 Reviewed-by: Niels Moller <nisse@webrtc.org> Reviewed-by: Åsa Persson <asapersson@webrtc.org> Reviewed-by: Oskar Sundbom <ossu@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26994}