This reverts commit 59bb2dba.

Revert "Update typedef syntax to use Function notation and turn on lint for old notation. (#18035)" (#18041)

This reverts commit 32586020.

Fixes #18028

Just changes typedef declarations, no logic changes.

This allows test environments other than `flutter test` to have a hook
into the test exception reporting. Some test environments, for example,
don't just dump error details to the console, but rather require them
to be reported to a separate server.

* no longer use the analyzer version shipped in the sdk

* update all package versions to the latest

re-write flutter analyze (the single-shot and --flutter-repo) to use the analysis server

* Configure Cirrus CI

* Read file directly instead of shelling a command

* Wait for all streams to finish

* Add LTR `textDirection`

Since `RenderFlex#_debugHasNecessaryDirections` requires it when `direction` is horizontal and there are multiple children.

* Run tests in dart2 mode.

* Fix type check

* Drop --checked, leave --preview-dart-2

* Remove debugging leftovers.

This will catch the case where tests hang -- and it will
force them to fail so that we see the output from the test.

* Handle error count reported by frontend.

Extend compilation result from single string to a structure(string filename and integer error count).

* Use ?.

* Include engine roll with dart sdk roll.

* parse(onError) -> tryParse

* Make '?? throw' more readable and avoid issue with analyzer

* Fix test so it mocks compiler output including errors count

Revert "re-write flutter analyze (the single-shot and --flutter-repo) to use the analysis server (#16281)" (#16482)

This reverts commit 2f41ea54.

re-write flutter analyze (the single-shot and --flutter-repo) to use the analysis server

* Bump mockito to 3.0.0-alpha+3

* Type annotation

Switch to the new Matrix4.tryInvert method to avoid throwing and catching (#15771) exceptions while performing hit testing.

* re-enable verify-only failing test for out of sync deps and update deps to latest version

* Fix powershell cat invocation to ensure correct encoding and line ending.

* Restore original flow for non-Windows platforms

* Reformat code to get rid of multi-line ?: expression

* Double quotes to single quotes

* Fix gallery build ruby script

* Also print a message when not deploying

* Update dartdoc to v0.18.1 and fix API readme, borrowing from docs.flutter.io

* Revert "Roll engine to 6473f1b106485cb0b4ea569af383173daeef8895 (#16032)"

This reverts commit 844ced01.

* Revert "Let travis test archiving per commit too (#16004)"

This reverts commit df5905f3.

* Revert "Revert "Move mockito to 3.0.0-alpha. (#15949)" (#15979)"

This reverts commit e59651f9.

* More thenReturn to thenAnswer when mocking Futures

* Revert "More thenReturn to thenAnswer when mocking Futures"

This reverts commit 194d2cf41754ad171efd6bb5898cf73bce5a75ab as we are reverting engine roll.

* Revert "Revert "More thenReturn to thenAnswer when mocking Futures""

This reverts commit 52c9e96b304b220f66d78a252fccea0c8e0ef24c.

* Add dependency override

* Fix issue

This reverts commit a7e62258 as there are failing tests.

* Move mockito to 3.0.0-alpha.

This is needed so it matches mockito version used internally.

* Pick up +2 for the fixes

* Fix whenReturn in fuchsia_remote_debug_protocol

* more thenReturn becomes thenAnswer

* more thenReturn becomes thenAnswer

* more thenReturn becomes thenAnswer

Adds a package that will support connecting to and debugging devices with multiple instances of the Dart VM, and operate on multiple Isolates and Flutter Views.

Currently supports connecting to all existing Dart VMs and extracting information about all Flutter Views running across each VM.