Enable brave://flags/#brave-vertical-tabs in Release channel

[stephendonner]

Description

Placeholder for when we're ready to ship, and can enable brave://flags/#brave-vertical-tabs in Release channel

Steps to Reproduce

1. install latest release-candidate build of 1.51.x
2. launch Brave
3. load brave://flags
4. confirm that brave://flags/#brave-vertical-tabs is set to Default
5. load a few tabs
6. context-click a tab
7. look for the option to Use Vertical Tabs

Cross-reference:

• beta: Enable brave://flags/#brave-vertical-tabs in Beta channel #29658
• nightly: Enable brave://flags/#brave-vertical-tabs in Nightly channel #28872

Actual result:

It's absent.

Expected result:

Reproduces how often:

100%

Brave version (brave://version info)

1.51.x (release candidate/release build)

Miscellaneous Information:

/cc @rebron @sangwoo108 @brave/qa-team

[sangwoo108]

@rebron Please let me know if this needs uplifting

[kjozwiak]

The above requires 1.52.102 or higher for 1.52.x verification 👍 @brave/qa-team note that we'll need to verify that vertical tabs are enabled by default via beta and then release once we do channel migrations and 1.52.x gets moved into release.

[LaurenWags]

Removing QA/Blocked as the first 1.52.x RC is available via https://github.com/brave/brave-browser/releases/tag/v1.52.110

[MadhaviSeelam]

Verification PASSED using

Brave | 1.52.110 Chromium: 114.0.5735.35 (Official Build) (64-bit)
-- | --
Revision | 2295354895fa3652ae47b651481831484f16d1ff-refs/branch-heads/5735@{#713}
OS | Windows 11 Version 22H2 (Build 22621.1702)

1. Installed 1.52.110
2. launch Brave
3. load brave://flags
4. confirm that brave://flags/#brave-vertical-tabs is set to Default
5. load a few tabs
6. context-click a tab
7. verified the option to Use Vertical Tabs is available
8. selected Used Vertical Tabs

• Confirmed vertical-tabs is enabled as default inbrave://flags
• Confirmed vertical tab panel is shown with opened tabs
• Confirmed vertical tab functionality worked as expected

example	example	example

[stephendonner]

Verified PASSED using

Brave	1.52.110 Chromium: 114.0.5735.35 (Official Build) (x86_64)
Revision	2295354895fa3652ae47b651481831484f16d1ff-refs/branch-heads/5735@{#713}
OS	macOS Version 13.5 (Build 22G5027e)

Steps:

1. Installed 1.52.110
2. launch Brave
3. load brave://flags
4. confirm that brave://flags/#brave-vertical-tabs is set to Default
5. load a few tabs
6. context-click a tab
7. verified the option to Use Vertical Tabs is available
8. selected Used Vertical Tabs
9. Confirmed vertical-tabs is enabled as default inbrave://flags

Confirmed vertical tab panel is shown with opened tabs
Confirmed vertical tab functionality worked as expected

example	example	example

[stephendonner]

Verified PASSED using

Brave	1.52.112 Chromium: 114.0.5735.35 (Official Build) (64-bit) 
Revision	2295354895fa3652ae47b651481831484f16d1ff-refs/branch-heads/5735@{#713}
OS	Linux

Steps:

1. installed 1.52.112
2. launched Brave
3. loaded brave://flags
4. confirmed that brave://flags/#brave-vertical-tabs is set to Default
5. loaded a few tabs
6. context-clicked a tab
7. verified the option to Use Vertical Tabs is available
8. selected Used Vertical Tabs
9. confirmed vertical-tabs is enabled as default in brave://flags

example	example	example