GitLab

Extend the lifetime of histograms
Blink.Compression.CompressionStream.Format and
Blink.Compression.DecompressionStream.Format. These aren't currently
needed, but will be needed again in future when we add more formats.

BUG=1158458,1158457

Change-Id: I9aa9ad94eb389a085e626750112ed5d7c319bac7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2624275
Commit-Queue: Adam Rice <ricea@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843027}