Manifest V2 feature => 100% on Beta, 25% on Release

[kjozwiak]

Win x64 verification(s)

Nightly - ExtensionsManifestV2Study:Enabled

Verification PASSED on Win 11 x64 using the following build(s):

Brave | 1.69.62 Chromium: 127.0.6533.17 (Official Build) nightly (64-bit)
-- | --
Revision | 50af8e07a47dfe29f581936e45c07e8ee8b676f5
OS | Windows 11 Version 23H2 (Build 22631.3810)

As per https://github.com/brave/brave-variations/pull/1064#issuecomment-2125319551, this was already enabled/checked on Nightly before initially pushing out ExtensionsManifestV2Study on Nightly. Quickly checked 1.69.62 Chromium: 127.0.6533.17 and ensured it was still working as expected.

Example	Example

BETA

Can't check BETA right now as the --variations-server-url=https://variations.bravesoftware.com/seed switch doesn't work. We'll need to get https://github.com/brave/brave-core/pull/24387 uplifted into 1.68.x and get a new build. However, we'll check BETA once the above goes live to ensure everything is working.

Release - ExtensionsManifestV2StudyRelease:Default

Verification PASSED on Win 11 x64 using the following build(s):

Brave | 1.67.123 Chromium: 126.0.6478.126 (Official Build) (64-bit)
-- | --
Revision | fc7619ef621fe4e6a0fa8b16c718f78ffc97a861
OS | Windows 11 Version 23H2 (Build 22631.3810)

• installed/launched 1.67.123 Chromium: 126.0.6478.126 using brave.exe --enable-logging=stderr --variations-server-url=https://variations.bravesoftware.com/seed
• re-launched 1.67.123 Chromium: 126.0.6478.126 using brave.exe --enable-logging=stderr --variations-server-url=https://variations.bravesoftware.com/seed
• ensured that ExtensionsManifestV2StudyRelease:Default via brave://version
• ensured that Manigest V2 extensions isn't visible/available via brave://settings/extensions

Example	Example

Release - ExtensionsManifestV2StudyRelease:Enabled

Verification PASSED on Win 11 x64 using the following build(s):

Brave | 1.67.123 Chromium: 126.0.6478.126 (Official Build) (64-bit)
-- | --
Revision | fc7619ef621fe4e6a0fa8b16c718f78ffc97a861
OS | Windows 11 Version 23H2 (Build 22631.3810)

• installed/launched 1.67.123 Chromium: 126.0.6478.126 using brave.exe --enable-logging=stderr --variations-server-url=https://variations.bravesoftware.com/seed
• re-launched 1.67.123 Chromium: 126.0.6478.126 using brave.exe --enable-logging=stderr --variations-server-url=https://variations.bravesoftware.com/seed
• ensured that ExtensionsManifestV2StudyRelease:Enabled via brave://version
• ensured that Manigest V2 extensions is visible/available via brave://settings/extensions

Example	Example	Example

Release - ExtensionsManifestV2StudyRelease (not appearing due to min_version requirement)

Verification PASSED on Win 11 x64 using the following build(s):

Brave | 1.65.133 Chromium: 124.0.6367.208 (Official Build) (64-bit)
-- | --
Revision | a719189e6a0245a6ce7fab3ddc637e8bd75aed08
OS | Windows 11 Version 23H2 (Build 22631.3810)

• installed/launched 1.65.133 Chromium: 124.0.6367.208 using brave.exe --enable-logging=stderr --variations-server-url=https://variations.bravesoftware.com/seed
• re-launched 1.65.133 Chromium: 124.0.6367.208 using brave.exe --enable-logging=stderr --variations-server-url=https://variations.bravesoftware.com/seed
• ensured that ExtensionsManifestV2StudyRelease is not being displayed/appearing under brave://version
• ensured that Manigest V2 extensions is not visible/available via brave://settings/extensions

Example	Example