* Update project.pbxproj files to say Flutter rather than Chromium

Also, the templates now have an empty organization so that we don't cause people to give their apps a Flutter copyright.

* Update the copyright notice checker to require a standard notice on all files

* Update copyrights on Dart files. (This was a mechanical commit.)

* Fix weird license headers on Dart files that deviate from our conventions; relicense Shrine.

Some were already marked "The Flutter Authors", not clear why. Their
dates have been normalized. Some were missing the blank line after the
license. Some were randomly different in trivial ways for no apparent
reason (e.g. missing the trailing period).

* Clean up the copyrights in non-Dart files. (Manual edits.)

Also, make sure templates don't have copyrights.

* Fix some more ORGANIZATIONNAMEs

* Sort Localization generation output

- When creating locales that were assumed from existing locales, the
file that is used is non-deterministic. This adds a sort to the iterator
to ensure that the same existing locale is used to generate the assumed
locale
- When generating material, cupertino and date localizations, the generated getters were not sorted. This
introduces an alphabetic sort

* remove main.dart.snapshot

Updates localizations to match what is now generated. It's unclear what caused the change: it didn't happen because of a flutter PR change, so we're still looking for where the source of the non-determinism is.  In the meantime, this will fix the build.

* Refresh .arb files

* Refresh localizations

Revert "Cupertino localization step 12: push translation for all supported languages (#31644)" (#32470)

This reverts commit 10922df6.

Cupertino localization step 8: create a gen_cupertino_localizations and generate one for cupertino english and french (#29824)

Cupertino localization step 7: modularize material specific things out of gen_localizations.dart (#29822)

Cupertino localization step 3: in-place move some material tools around to make room for cupertino (#29644)

* add missing entry to material_mr.arb

* Make progress indicators accessible

This reverts commit 80f80ab0.

For G3 Roll:

* Revert "MaterialButton must honor its minWidth and height parameters (#22919)"

This reverts commit a0233233.

* Revert "Update uses of ButtonTheme.bar: pass along the current Theme's colorScheme (#22827)"

This reverts commit 655bf6a2.

* Revert "ButtonTheme.of().colorScheme defers to Theme (#22880)"

This reverts commit a590940e.

* Revert "Bring TextTheme into alignment with the current Material spec (#22330)"

This reverts commit 8bfb4b3e.

* Revert "Added ColorScheme, updated ThemeData, ButtonTheme, material buttons (#22013)"

This reverts commit eea3465a.

* Manual adjustments to fix reversion issues.

Replaced about 535 "TBD" translations with the real thing.

Added remainingTextFieldCharacterCountTwo, remainingTextFieldCharacterCountMany, remainingTextFieldCharacterCountFew, to GlobalMaterialLocalizations

* enable lint unnecessary_new

* fix tests

* fix tests

* fix tests

The following changes are made by this PR:

 * Translation bundles now implement MaterialLocalizations directly,
   and are public so that they can be directly extended.

 * The list of supported languages is now a generated constant.

 * The icuShortTimePattern/TimeOfDayFormat values are now pre-parsed.

 * Various other changes for consistency with the style guide and the
   rest of the codebase, e.g. the class names don't use `_`, the
   `path` library is imported as such, more dartdocs, fewer `//
   ignore`s, validation using exceptions.

This reduces our technical debt benchmark.