Miscellaneous updates to PeerConnectionInterface comments
Miscellaneous updates to PeerConnectionInterface comments

NoTry: true
Bug: None
Change-Id: I9cf4f77e4775ff9b97c71f6a9bdb2d7f159e7048
Reviewed-on: https://webrtc-review.googlesource.com/57240
Commit-Queue: Steve Anton <93f73658da16553b94c040887a439a155812e54e@webrtc.org>
Reviewed-by: Seth Hampson <5a50a6f73a991bd7236b2b9fd2e9f2207db14f62@webrtc.org>
Reviewed-by: Taylor Brandstetter <f49cf6381e322b147053b74e4500af8533ac1e4c@webrtc.org>
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#22192}
ShiftMediaProject/libilbc,TimothyGu/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,ShiftMediaProject/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc,TimothyGu/libilbc