Add user pref for debouncing feature

[ShivanKaul]

Add a new pref to control debouncing to brave://settings/shields. Currently we only have a flag in brave://flags for debouncing.

Setting label: Auto-redirect tracking URLs
Sublabel: Enable support for bypassing top-level redirect tracking URLs. Learn More. Learn more points to https://brave.com/privacy-updates/11-debouncing/

Note that De-AMP related debouncing (e.g. debounce AMP cache URLs) would depend on both this new Debounce setting (to debounce at all) and the De-AMP setting prescribed by the pref key in debounce.json, support for which was added in #23121.

[LaurenWags]

@ShivanKaul is using https://dev-pages.brave.software/navigation-tracking/debouncing.html sufficient for testing the pref on/off setting?

cc @brave/qa-team

[ShivanKaul]

Yeah that makes sense. Also apologies, this should be Desktop and Android, I updated the PR but forgot to update the issue.

[MadhaviSeelam]

Verification PASSED using

Brave | 1.48.129 Chromium: 109.0.5414.87 (Official Build) beta (64-bit)
-- | --
Revision | 2dc18eb511c56e012081b4abc9e38c81c885f7d4-refs/branch-heads/5414@{#1241}
OS | Windows 11 Version 21H2 (Build 22000.1455)

Case 1: Enable Auto-redirect tracking URLs - PASSED

1. Install 1.48.129
2. launch Brave
3. navigate to brave://settings/shields
4. confirmed Auto-redirect tracking URLs setting is toggled On/Enabled as a default
5. confirmed Enable support for bypassing top-level redirect tracking URLs.' sub label text with Learn more more link displayed
6. clicked on Learn more, navigated to https://brave.com/privacy-updates/11-debouncing/
7. visit https://dev-pages.brave.software/navigation-tracking/debouncing.html
8. click Run for all the conditions (Default, Base 64, Regex & Regex (multi)
9. click other site and Run the same conditions

Confirmed redirecting worked as expected with Auto-redirect tracking URLs default setting

step 4-5	step 6	step 8	step 9

Case 2: Disable Auto-redirect tracking URLs - PASSED

1. Continue from Case 1:
   • Auto-redirect tracking URLs setting in brave://settings/shields enabled
2. disable Auto-redirect tracking URLs setting
3. visit https://dev-pages.brave.software/navigation-tracking/debouncing.html
4. click Run for Default condition

Confirmed redirecting didn't work with disabling Auto-redirect tracking URLs pref

step 2	step 3	step 4	ex	ex

[stephendonner]

Verification PASSED using

Brave	1.48.129 Chromium: 109.0.5414.87 (Official Build) beta (x86_64)
Revision	2dc18eb511c56e012081b4abc9e38c81c885f7d4-refs/branch-heads/5414@{#1241}
OS	macOS Version 11.7.2 (Build 20G1020)

Case 1: Enable Auto-redirect tracking URLs - PASSED

1. Install 1.48.129
2. launch Brave
3. navigate to brave://settings/shields
4. confirmed Auto-redirect tracking URLs setting is toggled On/Enabled as a default
5. confirmed Enable support for bypassing top-level redirect tracking URLs.' sub label text with Learn more more link displayed
6. clicked on Learn more, navigated to https://brave.com/privacy-updates/11-debouncing/
7. visit https://dev-pages.brave.software/navigation-tracking/debouncing.html
8. click Run for all the conditions (Default, Base 64, Regex & Regex (multi)
9. click other site and Run the same conditions

Confirmed redirecting worked as expected with Auto-redirect tracking URLs default setting

steps 4-5	step 6	step 8	step 9

Case 2: Disable Auto-redirect tracking URLs - PASSED

1. Continue from Case 1:
   • Auto-redirect tracking URLs setting in brave://settings/shields enabled
2. disable Auto-redirect tracking URLs setting
3. Toggled Auto-redirect tracking URLs to Off/Disabled via brave://settings/shields
4. visit https://dev-pages.brave.software/navigation-tracking/debouncing.html
5. click Run for Default condition

Confirmed redirecting didn't work with disabling Auto-redirect tracking URLs pref

step 2	step 3	step 4	ex	ex

[stephendonner]

Verified PASSED using 1.48.134 on a Google Pixel XL (arm64) running Android 9

Shared steps:

1. installed 1.48.134
2. launched Brave
3. tapped to set/unset the respective value for Auto-redirect tracking URLs in Brave Shields & privacy
4. loaded https://dev-pages.brave.software/navigation-tracking/debouncing.html
5. clicked on each of the Run buttons
6. (continue with each case)

Case 1: Enable Auto-redirect tracking URLs (default) - PASSED

observed referrer	Auto-redirect... ENABLED

Case 2: Disable Auto-redirect tracking URLs - PASSED

observed referrer	Auto-redirect... DISABLED

Results for each Run-button press

default	base64	regex	regex (multi)

[MadhaviSeelam]

Verification PASSED using

Brave | 1.48.140 Chromium: 109.0.5414.119 (Official Build) beta (64-bit)
-- | --
Revision | 772095164c7d5d4e73160f858efed3b5e87eca83-refs/branch-heads/5414@{#1458}
OS | Linux

Case 1: Enable Auto-redirect tracking URLs - PASSED

1. Install 1.48.140
2. launch Brave
3. open a new-tab
4. navigate to brave://settings/shields
5. confirmed Auto-redirect tracking URLs setting is toggled On/Enabled as a default
6. confirmed Enable support for bypassing top-level redirect tracking URLs.' sub label text with Learn more more link displayed
7. clicked on Learn more, navigated to https://brave.com/privacy-updates/11-debouncing/
8. visit https://dev-pages.brave.software/navigation-tracking/debouncing.html
9. click Run for all the conditions (Default, Base 64, Regex & Regex (multi)
10. click other site and Run the same conditions

Confirmed redirecting worked as expected with Auto-redirect tracking URLs default setting

step 5-6	step 7	step 9	step 10

Case 2: Disable Auto-redirect tracking URLs - PASSED

1. Continue from Case 1:
   • Auto-redirect tracking URLs setting in brave://settings/shields enabled
2. disable Auto-redirect tracking URLs setting
3. visit https://dev-pages.brave.software/navigation-tracking/debouncing.html
4. click Run for Default condition

Confirmed redirecting didn't work with disabling Auto-redirect tracking URLs pref

step 2	step 3	step 4	ex	ex