This is a reland of commit 3f3f991c03bb4073a06da37c822daaa9deed9307
Original change's description:
> Let port allocator create ice tie breaker
>
> Moves the responsibility for creating the ICE tie breaker from the JSEP transport controller to the port allocator. This will allow a future change to separate the ICE tie breaker (which is sent over the network and hence known to the peer) from the "port allocator random" (that is used to seed the ICE candidate foundation crc32 checksum) as an implementation detail.
>
> BUG=webrtc:14626
>
> Change-Id: I3a9a0980238d6108b1b154f45de2975b08793b1c
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/281660
> Reviewed-by: Harald Alvestrand <hta@webrtc.org>
> Commit-Queue: Philipp Hancke <phancke@microsoft.com>
> Cr-Commit-Position: refs/heads/main@{#41707}
Bug: webrtc:14626
Change-Id: Id3c8f257c5611958551bd66d7ce7a885bf8ba2f9
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/339320
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Philipp Hancke <phancke@microsoft.com>
Cr-Commit-Position: refs/heads/main@{#41720}
e3fb8122aa