Upgrade from C99 -> C100 on macOS x64 via1.38.x - Nightly (Checking C100)

[kjozwiak]

As per process, QA runs through the following cases to ensure that the major chromium bump that's about to get merged into master doesn't regress the Nightly channel. Once the major chromoium bump is merged into master, QA will run through a full manual pass on Windows & Android.

Startup & Components

• Verify that Brave is only contacting *.brave.com endpoints on first launch using either Charles Proxy, Fiddler, Wireshark or LittleSnitch (or a similar application)
  • Verify that opening a NTP doesn't trigger any outbound connections related to widgets without user interaction
• Remove the following component folders and ensure that they're being re-downloaded after restarting the browser:
  • afalakplffnnnlkncjhbmahjfjhmlkal: AutoplayWhitelist.dat, ExtensionWhitelist.dat, ReferrerWhitelist.json and Greaselion.json
  • CertificateRevocation
  • cffkpbalmllkdoenhmdmpbkajipdjfam: rs-ABPFilterParserData.dat & regional_catalog.json (AdBlock)
  • gccbbckogglekeggclmmekihdgdpdgoe: (Sponsored New Tab Images)
  • jicbkmdloagakknpihibphagfckhjdih: speedreader-updater.dat
  • oofiananboodjbbmdelgdommihjbkfag: HTTPSE
  • Safe Browsing
• Restart the browser, load brave://components, wait for 8 mins and verify that no component shows any errors

Note: Always double check brave://components to make sure there's no errors/missing version numbers. We basically want to make sure that components are working as they regressed in C98 when we first merged into master.

Upgrade

• Make sure that data from the last version appears in the new version OK
• Ensure that brave://version lists the expected Brave & Chromium versions
• With data from the last version, verify that:
  • Bookmarks on the bookmark toolbar and bookmark folders can be opened
  • Cookies are preserved
  • Installed extensions are retained and work correctly
  • Opened tabs can be reloaded
  • Stored passwords are preserved
  • Sync chain created in previous version is retained
  • Social media-blocking buttons changes are retained
  • Rewards
    • Wallet balance is retained
    • Auto-contribute list is retained
    • Both Tips and Monthly Contributions are retained
    • Wallet panel transactions list is retained
    • Changes to rewards settings are retained
    • Ensure that Auto Contribute is not being enabled when upgrading to a new version if AC was disabled
  • Ads
    • Both Estimated pending rewards & Ad notifications received this month are retained
    • Changes to ads settings are retained
    • Ensure that ads are not being enabled when upgrading to a new version if they were disabled
    • Ensure that ads are not disabled when upgrading to a new version if they were enabled

[stephendonner]

Currently blocked until #21743 is resolved.

[stephendonner]

Verified PASSED using

Brave	1.38.52 Chromium: 100.0.4896.46 (Official Build) nightly (x86_64)
Revision	5ca33821b2211805855c77d334353d27c616a7ca-refs/branch-heads/4896@{#584}
OS	macOS Version 11.6.3 (Build 20G415)

I believe #21743 ended up being due to an incorrect signing key being used in Jenkins; will work with @emerick to get the issue updated.