P3A measurements maybe causing UI hangs (disable temporarily)

Desktop

1. Fresh profile
2. Create 4 or more tabs
3. Change your default search engine to Brave (if not already set). Then change default to Ecosia.
4. Disable sponsored images
   • Desktop new tab > Customize > Show Background Images

Check the following:

1. View brave://local-state
2. Search for Brave.NTP.NewTabsCreated; verify value is correct (2 or more)
3. Search for Brave.Search.SwitchEngine; verify value is correct 3
4. Search for Brave.NTP.SponsoredImagesEnabled; verify value is 0
5. Verify some of the values have a sent as true

Android

1. Fresh profile on a previous version before https://github.com/brave/brave-core/pull/10940 landed
2. Create 4 or more tabs
3. Change your default search engine to Brave (if not already set). Then change default to Ecosia.
4. Disable sponsored images
   • Android brave://settings > New Tab Page > Show Sponsored Images)

Check the following:

• ensure that the previous data isn’t being removed when upgrading
• ensure that new data isn’t being added into brave://local-state after upgrading

See https://github.com/brave/brave-browser/issues/19280#issuecomment-964493571 for examples.

Description

After the 1.31.90 rollout, many users, mostly on Android but perhaps some also on desktop reported ui hangs. Since this is correlated with the first P3A submission window after #18224 was uplifted to release, it may be prudent to revert the change until we understand the issue better.

Steps to Reproduce

Unknown

Actual result:

Expected result:

Reproduces how often:

Desktop Brave version:

Android Device details:

• Install type (ARM, x86):
• Device type (Phone, Tablet, Phablet):
• Android version:

Version/Channel Information:

• Can you reproduce this issue with the current release?
• Can you reproduce this issue with the beta channel?
• Can you reproduce this issue with the nightly channel?

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields?
• Does the issue resolve itself when disabling Brave Rewards?
• Is the issue reproducible on the latest version of Chrome?

Miscellaneous Information:

[bsclifton]

Created https://github.com/brave/brave-browser/issues/19302 as a follow up - so we don’t forget to re-enable at some point

[kjozwiak]

Verification PASSED on Samsung S10+ running Android 11 using the following build:

1.31.91 Chromium: 95.0.4638.69

Clean Profile/New User

• ensured that Brave.NTP.NewTabsCreated, Brave.Search.SwitchEngine & Brave.NTP.SponsoredImagesEnabled weren’t being logged under brave://local-state on a clean profile on 1.31.91 Chromium: 95.0.4638.69

Previous/Upgraded Profile/User

• ensured that previous data from brave://local-state isn’t being removed when upgrading to 1.31.91 Chromium: 95.0.4638.69
• ensured that P3A cohorts are not being updated after updating to 1.31.91 Chromium: 95.0.4638.69

Found https://github.com/brave/brave-browser/issues/19324 while running through verifications. Looks like we’re re-enabling P3A whenever an upgrade is done on Android.

---

Verification PASSED on Samsung Galaxy Tablet A running Android 11 using the following build:

1.31.91 Chromium: 95.0.4638.69

Clean Profile/New User

• ensured that Brave.NTP.NewTabsCreated, Brave.Search.SwitchEngine & Brave.NTP.SponsoredImagesEnabled weren’t being logged under brave://local-state on a clean profile on 1.31.91 Chromium: 95.0.4638.69

Previous/Upgraded Profile/User

• ensured that previous data from brave://local-state isn’t being removed when upgrading to 1.31.91 Chromium: 95.0.4638.69
• ensured that P3A cohorts are not being updated after updating to 1.31.91 Chromium: 95.0.4638.69

Found https://github.com/brave/brave-browser/issues/19324 while running through verifications. Looks like we’re re-enabling P3A whenever an upgrade is done on Android.