Re-add support for Chromecast

[bsclifton]

Fixes #209

Dependencies

• Re-add support for Chromecast brave-core#2493
• https://github.com/brave/devops/pull/1085
• https://github.com/brave/redirector/pull/9
• https://github.com/brave/devops/pull/1293

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Verified that these changes build without errors on
  • Windows
  • macOS
  • Linux
• Verified that these changes pass automated tests (npm test brave_unit_tests && npm test brave_browser_tests && npm run test-security) on
  • Windows
  • macOS
  • Linux
• Ran git rebase master (if needed).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.
• Requested a security/privacy review as needed.
• Public documentation has been updated as necessary. 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-Protection-Mode
  • 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-issues-with-tracking-protection

Test Plan:

1. Have a Chrome cast device plugged in and powered on
2. Launch browser
3. Click cast... menu from app menu
4. Check available device list is visible in dialog

Reviewer Checklist:

• New files have MPL-2.0 license header.
• Request a security/privacy review as needed.
• Adequate test coverage exists to prevent regressions.

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.

[diracdeltas]

can we be more specific with this prefix based on brave/brave-core#2493 (comment)?

for instance https://clients2.google.com/service/update2/crx

[mihaiplesa]

Has failed network audit at https://staging.ci.brave.com/view/ci/job/brave-browser-build-pr/view/change-requests/job/PR-4631/lastSuccessfulBuild/execution/node/413/log/

[bsclifton]

CLOSING - this is no longer needed 😄