Added ipfs api permission rule

[spylogsster]

Resolves brave/brave-browser#13998

Add a new permission rule to expose chrome.ipfs API to extensions

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
• 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, npm run lint, 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:

• Install extension with ipfs permission in the manifest file, for example https://chrome.google.com/webstore/detail/webrecorder-archivewebpag/fpeoodllldobpkbkabpblcfaogecpndd
• It should alert user about IPFS in permission bubble
• go to chrome://inspect#extensions and inspect Webrecorder background page
• Check that namespace chrome.ipfs has only 3 public methods available
• Check same for Brave Shield extension, all ipfs methods should be available

[mkarolin]

chromium_src and patches changes LGTM 👍

[spylogsster]

Exposed 3 API for external extensions with confirmed ipfs permission:

• ipfs.getIPFSEnabled
• ipfs.resolveIPFSURI
• ipfs.getResolveMethodType

others will be available only for allowlisted ones (ipfs-companion, ipfs-companion-beta, Brave Shields)

cc @bbondy

[bbondy]

lgtm but have a question before I approve.