These function were replaced with AbslStringify Bug: None Change-Id: Ia34b98ed4e0ed18bb52fe9370cff7a6f70caae6d Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/364621 Commit-Queue: Harald Alvestrand <hta@webrtc.org> Auto-Submit: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#43346}