Flutter integration test timeouts with https://dart-review.googlesource.com/c/sdk/+/149613

[gw280]

The Flutter Engine roll into Flutter was failing due to timeouts on our integration tests, and this patch was found to be the root cause:

https://dart-review.googlesource.com/c/sdk/+/149613
b0484ec

Failures: https://github.com/flutter/flutter/pull/59380/checks?check_run_id=767354642

cc @rmacnak-google

[zanderso]

/cc @a-siva as well.

[zanderso]

The dart -> engine roller is currently blocked on this.

[alexmarkov]

Revert: https://dart-review.googlesource.com/c/sdk/+/151169

[jonahwilliams]

We should probably just fix the test right? This is intended to test the code generation for the l10n tool, which includes the ability to generate deferred for web applications.

[rmacnak-google]

Yeah, after some digging I found some generated code includes

  if (kIsWeb) {                                                                                                                                                                          
    return loadLibrary().then((dynamic _) => localizationClosure());                                                                                                                     
  } else {                                                                                                                                                                               
    return SynchronousFuture<AppLocalizations>(localizationClosure());                                                                                                                   
  }

which is bogus for the non-web case.

[jonahwilliams]

Fixed upstream in flutter with flutter/flutter#59539