This is just to reduce confusion since StunMessage and StunRequest instances are frequently used together and message objects are often configured from within request objects (which makes the name confusing). Bug: none Change-Id: I8bf5e774a5149239dd3023817614d411633bf583 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/258484 Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Auto-Submit: Tomas Gunnarsson <tommi@webrtc.org> Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36533}