These constants describes how value should be put on the wire and thus belong to the extension builder/writer class rather than extension value class Bug: None Change-Id: I65ca3923eddcc2e48563ad69b98356c159ad86be Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/166461 Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#30305}