tree 850fd6db79d74a26392d0fbfbc811d966f510cfb
parent 8aafb2477254e8aeb85009999fc770ef67d5d8c3
author Victor Tan <victortan@google.com> 1700596815 +0000
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1700596815 +0000

[3PCD] Update recording metrics when tracking protection onboard

This Cl update IsBlockedByThirdPartyDeprecationExperiment
with adding check whether tracking protection is actually onboard. This
means the third party cookie is real blocked. In other words, we only
record blink feature usage metrics when the 3PCD experiment is actual
block third party cookies and some mechanisms have re-enabled the third
party cookie access.

This also change the meaning of some UMA metric like:
PageLoad.Clients.ThirdPartyCookieAccessBlockedByExperiment. Once the
tracking protection is onboard, page load metric observer won't record
any cookie metrics unless some mechanisms re-enable third party cookie
access.

OBSOLETE_HISTOGRAMS=histogram PageLoad.Clients.ThirdPartyCookieAccessBlockedByExperiment is replaced by PageLoad.Clients.TPCD.ThirdPartyCookieAccessBlockedByExperiment2
OBSOLETE_HISTOGRAMS=histogram PageLoad.Clients.TPCD.TPCAccess.BlockedByExperiment.IsAdOrNonAd is replaced by PageLoad.Clients.TPCD.TPCAccess.BlockedByExperiment.IsAdOrNonAd2
OBSOLETE_HISTOGRAMS=histogram PageLoad.Clients.TPCD.AdTPCAccess.BlockedByExperiment is replaced by PageLoad.Clients.TPCD.AdTPCAccess.BlockedByExperiment2


Change-Id: Iafbd196b32342fe2490c577bbdd5dcbd18db4748
Bug: 1494080
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5033124
Commit-Queue: Victor Tan <victortan@chromium.org>
Reviewed-by: John Delaney <johnidel@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1227550}