* Allow user to specify which Chrome binary to use.

Previously the AdbLogReader did async setup in the StreamController.onListen callback, specifically it would query the api version and start the adb process. If the log subscription was cancelled before this setup completed, then the log output could (haven't confirmed) get added to a closed controller, causing the above state error. 

* Support Android Chrome for Flutter Web Driver.

* Reland: [flutter_tool] Where possible, catch only subtypes of Exception

* Add armv7f to getIOSArchForName

Revert "[flutter_tools] Allow providing dart-defines to Android, iOS, macOS builds (#51714)" (#52041)

This reverts commit ee60eeea.

This reverts commit 57c6721c.

This reverts commit 9de7787f.

This reverts commit f1cd47ef.

This reverts commit cc1c9649.

This reverts commit 1ef0eadb.

* Support Flutter Driver test for Flutter Web application.

* Support Flutter Driver test for Flutter Web application.

* Fix documentation issues.

* Support Flutter Driver test for Flutter Web application.

* Fix documentation.

* Remove unused file from dartdoc check.

* Sync to date.

* Revert change to dartdoc.

* Address comments.

* Apply suggestions from code review
Co-Authored-By: Jonah Williams <jonahwilliams@google.com>

* Update copyrights.

* Update allowed list for browsers.

* Verify command line arguments for Drive command is correctly parsed.

* Make waitUntilFirstFrameRasterized throw unimplementedError for Flutter Web Driver.

* Add comment for why sync WebDriver is used.

* Update documentations.

* Add more unit tests and update documentation.

* Configure test.dart so that web_extension_test will be executed with --platform=chrome.

* Revert unnecessary changes.

* Add new file path for Windows to blacklist.

* Reconstruct the structure of flutter_driver/test/src folder to remove filtering logic in dev/bots/test.dart/

* Fix path to web_extension_test.dart.

* Add instructions for how to use WebFlutterDriver.

* Update getLayerTree to use sendCommand instead of _sendCommand.

* Update pubspec files.

* 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

* implicit-casts:false on flutter_tools/lib

* address review comments

* use castStringKeyedMap

* introduce {bool,string,strings}Arg

* fix ci

This reverts commit c0af77bf.

This reverts commit b9eb3f71.

We fixed the issue by updating the constructors.

This reverts commit 4f385c8f.

So we can test SkSL precompile using the command line tools.
See https://github.com/flutter/engine/pull/12412.