puma: Implement PumaHistogramEncoder
PumaHistogramEncoder is responsible for encoding PUMA histogram deltas
into Private Metrics proto. It uses the existing histogram encoder from
metrics.
Bug: b:452034784
Change-Id: Iad53fef89aa7fe8557c525a0faade1c36f1e74ab
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7172292
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Commit-Queue: Kamil Jarosz <kjarosz@google.com>
Cr-Commit-Position: refs/heads/main@{#1549885}
NOKEYCHECK=True
GitOrigin-RevId: 1f50e3bc34075aa995e02b9a52e42def09dd30dc
4 files changed
