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Issue 893347 link

Starred by 1 user
Status: WontFix
Owner:
█ ramyan@chromium.org
OOO Jan 14 - 25
Closed: Oct 10
Cc:
█ youngnick@google.com
yyushkina@chromium.org
kmilka@chromium.org
kristip...@chromium.org
█ ramyan@chromium.org
gayane@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Linux , Windows , Chrome , Mac
Pri: 1
Type: Bug



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Log NewTabPage.CustomizationAvailability.[Backgrounds|Shortcuts] when NTP extensions are installed

Project Member Reported by ramyan@chromium.org, Oct 8 
Chrome Version: 69.0.3497.100

What steps will reproduce the problem?
(1) Install an NTP-override extension (eg https://chrome.google.com/webstore/detail/momentum/laookkfknpbbblfpciffpaejjkokdgca?hl=en)
(2) Navigate to NTP
(3) Check chrome://histograms for log updates

Nothing's recorded because the case is skipped here: https://cs.chromium.org/chromium/src/chrome/browser/ui/search/ntp_user_data_logger.cc?l=597

This could lead to inconsistencies between # NTP loads and customization availability.

NOTE: This doesn't affect extensions that cause the DSP to change.

Comment 1 by twelling...@chromium.org, Oct 9

Labels: zine-triaged

Comment 2 by ramyan@chromium.org, Oct 10

Owner: ramyan@chromium.org
Status: WontFix (was: Available)
This is actually infeasible because CustomizationAvailability is logged at the end of an NTP load, triggered when all (MV / shortcut) tiles have loaded. Extensions like Momentum override the NTP altogether, so the event trigger is not available.

Looking at the existing data, there actually aren't any inconsistencies between num(NTP.LoadTime) events and sum_of (customization availability) events.
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