Deprecate the Net.WpadQuickCheck* histograms.

The data from these old histograms is not actively being used.

Bug: 930860
Change-Id: I145bfa2d7f19353a8f938afe0ad5ab945a09ca0b
Reviewed-on: https://chromium-review.googlesource.com/c/1464074
Reviewed-by: Matt Menke <mmenke@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Commit-Queue: Eric Roman <eroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#631501}
3 files changed