There was a feature in the retransmission queue to avoid fragmenting
large messages when the congestion window was large. This was a feature
that intended to improve data channel performance under Chrome, where
communication with the network process (over MOJO) was lossy and losing
messages with small fragments could result in unnecessary
retransmissions. But back then, the implementation for fast retransmit
wasn't implemented correctly, so the benchmarking result don't
reproduce any longer.
So just improve the algorithm by removing this code. This aligns it with
the RFC and makes it easier to implement pluggable congestion control
algorithms (that wouldn't want this feature).
Bug: webrtc:42223116
Change-Id: Ifaaa82dac4b8fe2f55418158ae8b3da97199212f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/359681
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42797}
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