[Android] remove old widgets on upgrade scenario

[tapanmodh]

Resolves brave/brave-browser#27757

Submitter Checklist:

• I confirm that no security/privacy review is needed, or that I have requested one
• There is a ticket for my issue
• Used Github auto-closing keywords in the PR description above
• Wrote a good PR/commit description
• Squashed any review feedback or "fixup" commits before merge, so that history is a record of what happened in the repo, not your PR
• Added appropriate labels (QA/Yes or QA/No; release-notes/include or release-notes/exclude; OS/...) to the associated issue
• Checked the PR locally:
  • npm run test -- brave_browser_tests, npm run test -- brave_unit_tests wiki
  • npm run lint, npm run presubmit wiki, npm run gn_check, npm run tslint
• Ran git rebase master (if needed)

Reviewer Checklist:

• A security review is not needed, or a link to one is included in the PR description
• New files have MPL-2.0 license header
• Adequate test coverage exists to prevent regressions
• Major classes, functions and non-trivial code blocks are well-commented
• Changes in component dependencies are properly reflected in gn
• Code follows the style guide
• Test plan is specified in PR before merging

After-merge Checklist:

• The associated issue milestone is set to the smallest version that the
  changes has landed on
• All relevant documentation has been updated, for instance:
  • https://github.com/brave/brave-browser/wiki/Deviations-from-Chromium-(features-we-disable-or-remove)
  • https://github.com/brave/brave-browser/wiki/Proxy-redirected-URLs
  • https://github.com/brave/brave-browser/wiki/Fingerprinting-Protections
  • https://github.com/brave/brave-browser/wiki/Brave%E2%80%99s-Use-of-Referral-Codes
  • https://github.com/brave/brave-browser/wiki/Custom-Headers
  • https://github.com/brave/brave-browser/wiki/Web-Compatibility-Exceptions-in-Brave
  • https://github.com/brave/brave-browser/wiki/QA-Guide
  • https://github.com/brave/brave-browser/wiki/P3A

Test Plan:

1. Install 1.46.x
2. Launch Brave
3. Add brave quick action widget on home screen
4. Upgrade this build
5. Open brave app once
6. Attempt to add another widget from home screen long press.
7. Observe list of widgets under brave

[samartnik]

lgtm

[sujitacharya2005]

missing new line at the end

[tapanmodh]

It was missing in the master. I have added in the commit

[deeppandya]

LGTM

[deeppandya]

it seems we need to remove widgets explicitly. good find.

[Uni-verse]

Verified on Samsung Galaxy S21 using version:

Brave	1.49.45 Chromium: 109.0.5414.87 (Official Build) canary (32-bit) 
Revision	2dc18eb511c56e012081b4abc9e38c81c885f7d4-refs/branch-heads/5414@{#1241}
OS	Android 13; Build/TP1A.220624.014

Upgraded Profile

1. Installed 1.46.68 Nightly build - https://github.com/brave/brave-browser/releases/tag/v1.46.68
2. Confirm that brave widget list has 4 items
3. Added all 4 brave widgets to home screen
4. Upgraded to 1.49.45
5. Check home screen to ensure that old widgets are removed (brave dino and legacy quick action widget)
6. Confirm that brave widget list now contains 3 items (search widget, bookmarks widget and new quick action widget)

• Verified that legacy widgets are being removed from home screen on upgraded profile
• Verified brave widget list contains 3 items.
• Verified user is able to add the new quick action widget via settings -> homescreen widget and home screen widget window

1.46.68	1.46.68	1.46.68
1.49.45	1.49.45	1.49.45

Fresh Profile

1. Install 1.49.45 nightly build
2. Confirm brave widget list shows 3 items
3. Confirm user can add new quick action widget to the home screen

Example	Example