This PR is step 12 in the journey to solve issue #136139 and make the
entire Flutter repo more readable.
Most of it involves implementing switch expressions, and there's also a
few other random things that I wanted to clean up a bit.
I previously made a PR (#136140) that used `switch` expressions to make some parts of the Flutter codebase easier to understand. It was assigned to the framework team, and @christopherfujino let me know that it was too large to effectively review and recommended breaking it up into smaller pull requests.
Here's a PR that only targets files in the `dev/` directory. Hopefully this will be easier to work with!
(solves issue https://github.com/flutter/flutter/issues/136139)
This should fix https://github.com/flutter/flutter/issues/134636.
The column can get really tall, especially when there's line wrapping. This is the layout on a tablet, so on a motor g4 this column is likely going to overflow.
```
RenderParagraph#66251 relayoutBoundary=up3
â creator: RichText â Text-[<'status'>] â Column â
â FutureBuilder<TestStepResult> â Padding â
â KeyedSubtree-[GlobalKey#0f29e] â _BodyBuilder â MediaQuery â
â LayoutId-[<_ScaffoldSlot.body>] â CustomMultiChildLayout â
â _ActionsScope â Actions â â¯
| parentData: offset=Offset(0.0, 600.0); flex=null; fit=null
```

* Revert "turned on background isolate platform channel tests for android (#111279)"
This reverts commit 71b47975a9.
* Revert "Reland: Started handling messages from background isolates. (#111320)"
This reverts commit 1ad2757042.
* 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
fuchsia_tester.dart still assumes Dart 1. Previously, it ran tests directly
from source, flutter_platform.dart automatically runs a kernel compile when
operating in Dart 2 mode, but this assumes a functional Dart SDK is available
in the artifacts directly, and fuchsia_tester.dart mocks out the artifacts
directory with an empty temp dir.
Remaining work is:
1. Get the frontend server building as a dependency on Fuchsia.
2. Patch fuchsia_tester.dart to use a valid Dart SDK and frontend server.
This also reverts migration to Dart 2 typedef syntax.
This reverts commit 6c56bb2. (#18362)
This reverts commit 3daebd0. (#18316)
Now that Dart 1 is turned off, reapplying my change to turn on the prefer_generic_function_type_aliases analysis option, and fix all the typedefs to Dart 2 preferred syntax.
Also eliminated the unused analysis_options_repo.yaml file and turned on public_member_api_docs in analysys_options.yaml.
No logic changes, just changing the typedef syntax for all typedefs, and updating analysis options.
Our style guide says the k's are not necessary, and it seems like a good idea to make all the code be consistent on this.
Only naming changes to private vars: no logic changes.