That these declarations were missing was a bug, which apparently didn't actually cause build problems in either Chromium or WebRTC standalone. (Presumably, because rent_a_codec was always linked together with other build targets that did declare such dependencies.) BUG=webrtc:5435 Review URL: https://codereview.webrtc.org/1607463002 Cr-Commit-Position: refs/heads/master@{#11303}