Cherry pick 3d104f43649d333492dfa792968c8a09af93a84c

[dnfield]

Remove obsolete check on FlutterPlatformViewsController::OnCreate (#19819)

[fluttergithubbot]

This pull request was opened against a branch other than master. Since Flutter pull requests should not normally be opened against branches other than master, I have changed the base to master. If this was intended, you may modify the base back to flutter-1.20-candidate.7. See the Release Process for information about how other branches get updated.

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[dnfield]

Web engine was infra failure - retry here: https://ci.chromium.org/p/flutter/builders/try/Linux%20Web%20Engine/7024

[dnfield]

Also picking da8defd to get a new script the web builders want (/cc @nturgut )

This will fail the framework analysis because framework master has been updated for a rev of dart not contained in this branch.

[nturgut]

Also picking da8defd to get a new script the web builders want (/cc @nturgut )

This will fail the framework analysis because framework master has been updated for a rev of dart not contained in this branch.

Thanks a lot for the cherrypick.

[christopherfujino]

updated cirrus.yml to checkout the right framework branch

[dnfield]

This is all green. LGTY @christopherfujino or do you still have to update the CIPD stuff?

[dnfield]

I'm going to merge assuming this is all ok. We can retag CIPD if needed.

[christopherfujino]

sorry, just saw this now. it's good to go, though 👍