
We have completed the implementation of a new V2 backend for the CompressionDictionaryTransport feature. And we don't need to keep the V1 backend. So this CL removes the V1 backend. Bug: 1413922 Change-Id: Ifb8e59e9f617d67a9098adfce4f1b4f1b422d06b Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5274982 Reviewed-by: Patrick Meenan <pmeenan@chromium.org> Reviewed-by: Adam Rice <ricea@chromium.org> Commit-Queue: Tsuyoshi Horo <horo@chromium.org> Cr-Commit-Position: refs/heads/main@{#1257871}