This reverts commit 80237ef8.

This reverts commit 1ffdfa81.

Updated references to the old button classes to the new ones in comments and documentation for tests in the material and cupertino libraries. (#62164)

Updated references to the old button classes to the new ones in comments and documentation for classes in the widgets, services and rendering libraries. (#62099)

Updated references to the old button classes to the new ones in comments and documentation for classes in the material library. (#62092)

(split out from https://github.com/flutter/flutter/pull/62317)

https://github.com/flutter/flutter/issues/31931

* Unified analyze error log format

* Fix review issues

google3 callsites are updated, remove global lookup from constructor parameters.

move the final_exit label to the correct script location for the flutter/dart entrypoints.

* state restoration

* added example

* typos and analyzer

* whitespace

* more typos

* remove unnecessary import

* whitespace

* fix sample code

* tests for restorationmanager and restorationid

* ++

* typo

* tests for bucket, part1

* rename tests

* more tests

* finished tests for service layer

* remove wrong todo

* ++

* review comments

* tests for Unmanaged and regular scope

* RootRestorationScope tests

* typo

* whitespace

* testing framework

* tests for properties

* last set of tests

* analyzer

* typo

* dan review

* whitespace

* ++

* refactor finalizers

* ++

* ++

* dispose guard

* ++

* ++

* dan review

* add manager assert

* ++

* analyzer

* greg review

* fix typo

* Ian & John review

* ian review

* RestorationID -> String

* revert comment

* Make primitives non-nullable in prep for NNBD