Enable Brave VPN by default

[bsclifton]

Test plan

See brave/brave-core#17989

Description

VPN is enabled now via a Griffin experiment CrossPlatformVPNStudy which enable the following features:

• BraveVPN
• BraveVPNLinkSubscriptionAndroidUI

These features are enabled for all channels (Nightly, Beta, Release) and percentage is at 100%. We should enable this by default so that we can remove the Griffin experiment.

[stephendonner]

Verification PASSED using

Brave	1.52.85 Chromium: 113.0.5672.63 (Official Build) beta (x86_64)
Revision	0e1a4471d5ae5bf128b1bd8f4d627c8cbd55f70c-refs/branch-heads/5672@{#912}
OS	macOS Version 11.7.6 (Build 20G1231)

Steps:

1. installed 1.52.85
2. launched Brave
3. confirmed VPN button on the toolbar
4. clicked to confirmBuy/Already purchased VPN? dialog
5. opened brave://flags
6. confirmed brave://flags/#brave-vpn is set to Default

Brave VPN dialog	brave://flags

[stephendonner]

Verified PASSED using

Brave	1.52.92 Chromium: 113.0.5672.92 (Official Build) beta (64-bit)
Revision	b6f521170062a1fa8a82c33fb223b06fec566da1-refs/branch-heads/5672_63@{#10}
OS	Windows 10 Version 22H2 (Build 19045.2913)

Steps:

1. installed 1.52.92
2. launched Brave
3. confirmed VPN button on the toolbar
4. clicked to confirm Buy / Already purchased VPN? dialog
5. opened brave://flags
6. confirmed brave://flags/#brave-vpn is set to Default

Brave VPN dialog	brave://flags

[stephendonner]

@MadhaviSeelam mind verifying on Windows 11, and slapping on QA Pass/Win64, when you do? Thanks!

[kjozwiak]

The above requires 1.51.116 or higher for 1.51.x verification. Going to remove the QA Pass labels as we'll need to retest on 1.51.x once we get the RC builds.

[MadhaviSeelam]

Verification PASSED using

Brave | 1.51.117 Chromium: 113.0.5672.92 (Official Build) (64-bit)
-- | --
Revision | b6f521170062a1fa8a82c33fb223b06fec566da1-refs/branch-heads/5672_63@{#10}
OS | Windows 11 Version 22H2 (Build 22621.1702)

1. installed 1.51.117
2. launched Brave
3. confirmed VPN button on the toolbar
4. clicked to confirm Buy / Already purchased VPN? dialog
5. confirmed successfully logged into VPN with existing prod credentials
6. opened brave://flags
7. confirmed brave://flags/#brave-vpn is set to Default

step 3-4	step 5	step 6-7
	!

[stephendonner]

Verified PASSED using

Brave	1.51.117 Chromium: 113.0.5672.92 (Official Build) (x86_64)
Revision	b6f521170062a1fa8a82c33fb223b06fec566da1-refs/branch-heads/5672_63@{#10}
OS	macOS Version 11.7.6 (Build 20G1231)

Steps:

1. installed 1.51.117
2. launched Brave
3. confirmed VPN button on the toolbar
4. clicked to confirm Buy/Already purchased VPN....? dialog
5. opened brave://flags
6. confirmed brave://flags/#brave-vpn is set to Default

Brave VPN dialog	brave://flags

[stephendonner]

Verified PASSED using

Brave	1.51.117 Chromium: 113.0.5672.92 (Official Build) (64-bit)
Revision	b6f521170062a1fa8a82c33fb223b06fec566da1-refs/branch-heads/5672_63@{#10}
OS	Windows 10 Version 22H2 (Build 19045.2965)

Steps:

1. installed 1.51.117
2. launched Brave
3. confirmed VPN button in the toolbar
4. clicked to confirm Buy/Already purchased...? dialog
5. opened brave://flags
6. confirmed brave://flags/#brave-vpn is set to Default

Brave VPN dialog	brave://flags

[Uni-verse]

Verified on Samsung Galaxy S21 5G using the following version(s):

Brave	1.51.118 Chromium: 113.0.5672.126 (Official Build) (64-bit) 
Revision	c541687b21a73452ab403e2dced7033ddc97ee9d-refs/branch-heads/5672@{#1202}
OS	Android 13; Build/TP1A.220624.014; 33; REL

Using Test Plan in brave/brave-core#15602 (comment)

1. Install 1.51.118
2. Open menu, tap on VPN
3. Purchase using IAP
4. Install VPN profile
5. Open VPN settings and confirm subscription
6. Confirm Link Subscription option is available in the VPN settings
7. Confirm tapping on Link Subscription will open account.brave.com with intent params
8. Open app switcher and close brave app
9. Relaunch brave, confirm VPN link subscription callout is shown

• Confirmed Brave VPN is shown in the menu by default on fresh install.
• Confirmed VPN connection is enabled after installing profile.
• Confirmed Link purchase to your Brave account option is shown in settings and callout is presented to user.

Example	Example	Example	Example