Non breaking changes:

• Bug that only exists in new runner: "Lighthouse is warming up..." in Chrome M112+ #15026
  • Fixed in M115, leaving open until M115 is stable for a while
• Remove toggle for legacy runner in DevTools
  • https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/4749726
• Remove legacy runner options in LR (also from the internal smokerider)
• Ensure codecov doesn't miss anything in non-legacy code after deleting all legacy tests. Example of a test case that would be lost right now is coverage for __internalOptionalArtifacts. legacy/config-test seems to have a lot. Are there more? Also see Fraggle rock e2e config tests #14105
  • http://go/lh-legacy-config-coverage
• Remove references to "Fraggle rock" or "FR" in comments and tests and random other places
• Remove references to legacy stuff (passes, --legacy-navigation, etc) in docs

Breaking changes:

• Actually remove everything associated w/ legacy (config, driver, gather-runner, tests)
• Rename all the FRThis/FRThat types and functions and stuff (possibly not breaking but good to do in a breaking release for type users)
• Remove the legacy devtoolsLogs and traces artifacts (now DevtoolsLog and Trace)
  • Punting to 12.0, Remove devtoolsLogs and traces compat artifacts #15306