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This CL removes UMA user actions that have been replaced by a new
histogram since M79.

Bug: 995757
Change-Id: Iaeae4bd9125f68209a48f8a0c315eefb39b6b2b3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2247729
Auto-Submit: Jan Krcal <jkrcal@chromium.org>
Reviewed-by: Brian White <bcwhite@chromium.org>
Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Brian White <bcwhite@chromium.org>
Cr-Commit-Position: refs/heads/master@{#780069}