[flutter_tools] remove train and inject-plugins command (#67766)

The train command does nothing and was originally added to provide a no-output default for generating app-jit snapshots. The inject-plugins command is only for a repo-only analysis check, which is not necessary since we regenerate during pub get.

#29805

dev/bots/analyze.dart

@@ -64,9 +64,6 @@ Future<void> run(List<String> arguments) async {
   print('$clock Test package imports...');
   await verifyNoTestPackageImports(flutterRoot);
 
-  print('$clock Generated plugin registrants...');
-  await verifyGeneratedPluginRegistrants(flutterRoot);
-
   print('$clock Bad imports (framework)...');
   await verifyNoBadImportsInFlutter(flutterRoot);
 
@@ -369,44 +366,6 @@ Future<void> verifyNoTestPackageImports(String workingDirectory) async {
   }
 }
 
-Future<void> verifyGeneratedPluginRegistrants(String flutterRoot) async {
-  final Directory flutterRootDir = Directory(flutterRoot);
-
-  final Map<String, List<File>> packageToRegistrants = <String, List<File>>{};
-
-  for (final File file in flutterRootDir.listSync(recursive: true).whereType<File>().where(_isGeneratedPluginRegistrant)) {
-    final String package = _getPackageFor(file, flutterRootDir);
-    final List<File> registrants = packageToRegistrants.putIfAbsent(package, () => <File>[]);
-    registrants.add(file);
-  }
-
-  final Set<String> outOfDate = <String>{};
-
-  for (final String package in packageToRegistrants.keys) {
-    final Map<File, String> fileToContent = <File, String>{};
-    for (final File f in packageToRegistrants[package]) {
-      fileToContent[f] = f.readAsStringSync();
-    }
-    await runCommand(flutter, <String>['inject-plugins'],
-      workingDirectory: package,
-      outputMode: OutputMode.discard,
-    );
-    for (final File registrant in fileToContent.keys) {
-      if (registrant.readAsStringSync() != fileToContent[registrant]) {
-        outOfDate.add(registrant.path);
-      }
-    }
-  }
-
-  if (outOfDate.isNotEmpty) {
-    exitWithError(<String>[
-      '${bold}The following GeneratedPluginRegistrants are out of date:$reset',
-      for (String registrant in outOfDate) ' - $registrant',
-      '\nRun "flutter inject-plugins" in the package that\'s out of date.',
-    ]);
-  }
-}
-
 Future<void> verifyNoBadImportsInFlutter(String workingDirectory) async {
   final List<String> errors = <String>[];
   final String libPath = path.join(workingDirectory, 'packages', 'flutter', 'lib');
@@ -1294,15 +1253,6 @@ List<T> _deepSearch<T>(Map<T, Set<T>> map, T start, [ Set<T> seen ]) {
   return null;
 }
 
-String _getPackageFor(File entity, Directory flutterRootDir) {
-  for (Directory dir = entity.parent; dir != flutterRootDir; dir = dir.parent) {
-    if (File(path.join(dir.path, 'pubspec.yaml')).existsSync()) {
-      return dir.path;
-    }
-  }
-  throw ArgumentError('$entity is not within a dart package.');
-}
-
 bool _isGeneratedPluginRegistrant(File file) {
   final String filename = path.basename(file.path);
   return !file.path.contains('.pub-cache')

packages/flutter_tools/lib/executable.dart

@@ -28,7 +28,6 @@ import 'src/commands/format.dart';
 import 'src/commands/generate.dart';
 import 'src/commands/generate_localizations.dart';
 import 'src/commands/ide_config.dart';
-import 'src/commands/inject_plugins.dart';
 import 'src/commands/install.dart';
 import 'src/commands/logs.dart';
 import 'src/commands/make_host_app_editable.dart';
@@ -39,7 +38,6 @@ import 'src/commands/screenshot.dart';
 import 'src/commands/shell_completion.dart';
 import 'src/commands/symbolize.dart';
 import 'src/commands/test.dart';
-import 'src/commands/train.dart';
 import 'src/commands/update_packages.dart';
 import 'src/commands/upgrade.dart';
 import 'src/features.dart';
@@ -126,8 +124,6 @@ Future<void> main(List<String> args) async {
     ),
     // Development-only commands. These are always hidden,
     IdeConfigCommand(),
-    InjectPluginsCommand(),
-    TrainingCommand(),
     UpdatePackagesCommand(),
   ], verbose: verbose,
      muteCommandLogging: muteCommandLogging,

packages/flutter_tools/lib/src/commands/inject_plugins.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import '../globals.dart' as globals;
-import '../plugins.dart';
-import '../project.dart';
-import '../runner/flutter_command.dart';
-
-class InjectPluginsCommand extends FlutterCommand {
-  InjectPluginsCommand() {
-    requiresPubspecYaml();
-  }
-
-  @override
-  final String name = 'inject-plugins';
-
-  @override
-  final String description = 'Re-generates the GeneratedPluginRegistrants.';
-
-  @override
-  final bool hidden = true;
-
-  @override
-  Future<Set<DevelopmentArtifact>> get requiredArtifacts async => const <DevelopmentArtifact>{};
-
-  @override
-  Future<FlutterCommandResult> runCommand() async {
-    final FlutterProject project = FlutterProject.current();
-    await refreshPluginsList(project, checkProjects: true);
-    await injectPlugins(project, checkProjects: true);
-    final bool result = hasPlugins(project);
-    if (result) {
-      globals.printStatus('GeneratedPluginRegistrants successfully written.');
-    } else {
-      globals.printStatus('This project does not use plugins, no GeneratedPluginRegistrants have been created.');
-    }
-
-    return FlutterCommandResult.success();
-  }
-}

packages/flutter_tools/lib/src/commands/train.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import '../runner/flutter_command.dart';
-
-/// This command is run when generating the app-JIT snapshot for the tool, so it cannot access the Cache
-/// or any artifacts that haven't been downloaded yet.
-class TrainingCommand extends FlutterCommand {
-  @override
-  String get description => 'training run for app-jit snapshot';
-
-  @override
-  String get name => 'training';
-
-  @override
-  bool get hidden => true;
-
-  @override
-  bool get shouldUpdateCache => false;
-
-  @override
-  Future<FlutterCommandResult> runCommand() async {
-    // This command does not do anything yet :).
-    return FlutterCommandResult.success();
-  }
-}

packages/flutter_tools/test/integration.shard/command_output_test.dart

@@ -22,9 +22,7 @@ void main() {
     ]);
 
     // Development tools.
-    expect(result.stdout, isNot(contains('ide-config')));
     expect(result.stdout, isNot(contains('update-packages')));
-    expect(result.stdout, isNot(contains('inject-plugins')));
 
     // Deprecated.
     expect(result.stdout, isNot(contains('make-host-app-editable')));