Patch Changes

• 79b0ba4: This changeset removes the Puppeteer/Chrome focus browser patches that shouldn't
  be needed anymore, and can cause instability.

  The patches were added quite a while ago, and the upstream issues should
  be resolved in Chromium. See: https://issues.chromium.org/issues/40272146.

  Also see:
  puppeteer/puppeteer#10350 (comment).

  The patches are currently also resulting some instability of web test
  runner. That is because the patch calls an exposed function from inside
  the browser, while navigation later on during stopSession can happen;
  breaking the handle for retrieving function call arguments passed to the
  exposed function.

  Puppeteer team found this issue and also landed a fix to improve the
  failure mode here. See:
  puppeteer/puppeteer#13759