commit cedf90c85abc9abd4a91d54f576a66bab08d5fe7
author Tommy Nyquist <nyquist@chromium.org> Mon Jul 01 23:47:10 2019
committer Commit Bot <commit-bot@chromium.org> Mon Jul 01 23:47:10 2019
tree a04648140c15f596c83cf2c98abf8110c9d01953
parent dc9c1c13704c3a7a699b22a353c80102de9f5398

[net] Retire histograms for initializing cookie database.

When we added support for private additions to the Public Suffix List,
there were some performance issues, so we added a few histograms to
nail down exactly what was causing it. See crbug.com/96086 for details.

The histograms that were added at that point are still producing data,
but the seem to have been mostly stable at all percentiles the last
year, so we decided to retire them.

The following histograms are being retired:
- Cookie.TimeLoadDomains
  - Time to load entries from SQLite DB.
- Cookie.TimeParseDomains
  - Time to parse the domains. This is basically the time it takes to
    invoke registry_controlled_domains::GetDomainAndRegistry(...) with
    INCLUDE_PRIVATE_REGISTRIES set for all the domains.
- Cookie.TimeInitializeDomainMap
  - Sum of time to load entries from SQLite DB and parse them.

The code to produce them is deleted in this CL, and they are also marked
as obsolete in the histograms.xml file.

Bug: 975202
Change-Id: I60c77be612c057f7e0bdb8ebb688f9477ec9b698
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1663480
Auto-Submit: Tommy Nyquist <nyquist@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Commit-Queue: Tommy Nyquist <nyquist@chromium.org>
Cr-Commit-Position: refs/heads/master@{#673877}