dcSCTP library users can set their custom g_handover_state_transformer_for_test that can serialize and deserialize the state. All dcSCTP handover tests call g_handover_state_transformer_for_test. If some part of the state is serialized incorrectly or is forgotten, high chance that it will fail the tests. Bug: webrtc:13154 Change-Id: I251a099be04dda7611e9df868d36e3a76dc7d1e1 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/232325 Commit-Queue: Sergey Sukhanov <sergeysu@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Victor Boivie <boivie@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35035}