Update collection-fors to prefer final (as per updated prefer_final_in_for_each) (#127511)

The newly updated lint will soon flag for-each in collections.

See discussion: https://github.com/dart-lang/linter/pull/4383

/cc @goderbauer

dev/benchmarks/macrobenchmarks/lib/src/opacity_peephole.dart

@@ -21,7 +21,7 @@ class OpacityPeepholePage extends StatelessWidget {
       body: ListView(
         key: const Key(kOpacityScrollableName),
         children: <Widget>[
-          for (OpacityPeepholeCase variant in allOpacityPeepholeCases)
+          for (final OpacityPeepholeCase variant in allOpacityPeepholeCases)
             ElevatedButton(
               key: Key(variant.route),
               child: Text(variant.name),

dev/benchmarks/microbenchmarks/lib/ui/image_bench.dart

@@ -86,7 +86,7 @@ Future<void> main() async {
     watch.start();
     for (int i = 0; i < 10; i += 1) {
       await Future.wait(<Future<ui.ImmutableBuffer>>[
-        for (String asset in assets)
+        for (final String asset in assets)
           rootBundle.loadBuffer(asset)
       ]);
     }

dev/bots/test.dart

@@ -1136,7 +1136,7 @@ Future<void> _runWebUnitTests(String webRenderer) async {
 Future<void> _runWebLongRunningTests() async {
   final String engineVersion = File(engineVersionFile).readAsStringSync().trim();
   final List<ShardRunner> tests = <ShardRunner>[
-    for (String buildMode in _kAllBuildModes) ...<ShardRunner>[
+    for (final String buildMode in _kAllBuildModes) ...<ShardRunner>[
       () => _runFlutterDriverWebTest(
         testAppDirectory: path.join('packages', 'integration_test', 'example'),
         target: path.join('test_driver', 'failure.dart'),

dev/conductor/core/test/codesign_test.dart

@@ -155,7 +155,7 @@ void main() {
           ],
           stdout: allBinaries.join('\n'),
         ),
-        for (String bin in allBinaries)
+        for (final String bin in allBinaries)
           FakeCommand(
             command: <String>['file', '--mime-type', '-b', bin],
             stdout: 'application/x-mach-binary',
@@ -239,7 +239,7 @@ void main() {
           ],
           stdout: allBinaries.join('\n'),
         ),
-        for (String bin in allBinaries)
+        for (final String bin in allBinaries)
           FakeCommand(
             command: <String>['file', '--mime-type', '-b', bin],
             stdout: 'application/x-mach-binary',
@@ -329,7 +329,7 @@ void main() {
           ],
           stdout: allBinaries.join('\n'),
         ),
-        for (String bin in allBinaries)
+        for (final String bin in allBinaries)
           FakeCommand(
             command: <String>['file', '--mime-type', '-b', bin],
             stdout: 'application/x-mach-binary',
@@ -422,7 +422,7 @@ void main() {
           ],
           stdout: allBinaries.join('\n'),
         ),
-        for (String bin in allBinaries)
+        for (final String bin in allBinaries)
           FakeCommand(
             command: <String>['file', '--mime-type', '-b', bin],
             stdout: 'application/x-mach-binary',
@@ -514,7 +514,7 @@ void main() {
           ],
           stdout: allBinaries.join('\n'),
         ),
-        for (String bin in allBinaries)
+        for (final String bin in allBinaries)
           FakeCommand(
             command: <String>['file', '--mime-type', '-b', bin],
             stdout: 'application/x-mach-binary',
@@ -578,7 +578,7 @@ void main() {
           ],
           stdout: allBinaries.join('\n'),
         ),
-        for (String bin in allBinaries)
+        for (final String bin in allBinaries)
           FakeCommand(
             command: <String>['file', '--mime-type', '-b', bin],
             stdout: 'application/x-mach-binary',

dev/devicelab/lib/framework/ab.dart

@@ -49,7 +49,7 @@ class ABTest {
   static Map<String, List<double>> _convertFrom(dynamic results) {
     final Map<String, dynamic> resultMap = results as Map<String, dynamic>;
     return <String, List<double>> {
-      for (String key in resultMap.keys)
+      for (final String key in resultMap.keys)
         key: (resultMap[key] as List<dynamic>).cast<double>(),
     };
   }

examples/api/lib/widgets/basic/custom_multi_child_layout.0.dart

@@ -102,7 +102,7 @@ class CustomMultiChildLayoutExample extends StatelessWidget {
       ),
       children: <Widget>[
         // Create all of the colored boxes in the colors map.
-        for (MapEntry<String, Color> entry in _colors.entries)
+        for (final MapEntry<String, Color> entry in _colors.entries)
           // The "id" can be any Object, not just a String.
           LayoutId(
             id: entry.key,

examples/api/lib/widgets/basic/indexed_stack.0.dart

@@ -76,7 +76,7 @@ class _IndexedStackExampleState extends State<IndexedStackExample> {
               children: <Widget>[
                 IndexedStack(
                   index: index,
-                  children: <Widget>[for (String name in names) PersonTracker(name: name)],
+                  children: <Widget>[for (final String name in names) PersonTracker(name: name)],
                 )
               ],
             ),

packages/flutter/lib/src/cupertino/context_menu.dart

@@ -1448,7 +1448,7 @@ class _ContextMenuSheet extends StatelessWidget {
             crossAxisAlignment: CrossAxisAlignment.stretch,
             children: <Widget>[
               actions.first,
-              for (Widget action in actions.skip(1))
+              for (final Widget action in actions.skip(1))
                 DecoratedBox(
                   decoration: BoxDecoration(
                     border: Border(

packages/flutter/lib/src/foundation/assertions.dart

@@ -1117,7 +1117,7 @@ class FlutterError extends Error with DiagnosticableTreeMixin implements Asserti
 
     // Only include packages we actually elided from.
     final List<String> where = <String>[
-      for (MapEntry<String, int> entry in removedPackagesAndClasses.entries)
+      for (final MapEntry<String, int> entry in removedPackagesAndClasses.entries)
         if (entry.value > 0)
           entry.key,
     ]..sort();

packages/flutter/lib/src/material/dropdown_menu.dart

@@ -614,7 +614,7 @@ class _DropdownMenuState<T> extends State<DropdownMenu<T>> {
                     suffixIcon: trailingButton,
                   ).applyDefaults(effectiveInputDecorationTheme)
                 ),
-                for (Widget c in _initialMenu!) c,
+                for (final Widget c in _initialMenu!) c,
                 trailingButton,
                 leadingButton,
               ],

packages/flutter/lib/src/painting/decoration_image.dart

@@ -613,7 +613,7 @@ void paintImage({
         developer.postEvent(
           'Flutter.ImageSizesForFrame',
           <String, Object>{
-            for (ImageSizeInfo imageSizeInfo in _pendingImageSizeInfo.values)
+            for (final ImageSizeInfo imageSizeInfo in _pendingImageSizeInfo.values)
               imageSizeInfo.source!: imageSizeInfo.toJson(),
           },
         );

packages/flutter/test/foundation/leak_tracking.dart

@@ -144,7 +144,7 @@ class LeakCleaner {
 
   Leaks clean(Leaks leaks) {
     final Leaks result =  Leaks(<LeakType, List<LeakReport>>{
-      for (LeakType leakType in leaks.byType.keys)
+      for (final LeakType leakType in leaks.byType.keys)
         leakType: leaks.byType[leakType]!.where((LeakReport leak) => _shouldReportLeak(leakType, leak)).toList()
     });
     return result;

packages/flutter_driver/lib/src/driver/vmservice_driver.dart

@@ -433,7 +433,7 @@ class VMServiceFlutterDriver extends FlutterDriver {
       } while (currentStart < endTime!);
       return Timeline.fromJson(<String, Object>{
         'traceEvents': <Object?> [
-          for (Map<String, Object?>? chunk in chunks)
+          for (final Map<String, Object?>? chunk in chunks)
             ...chunk!['traceEvents']! as List<Object?>,
         ],
       });

packages/flutter_tools/lib/src/android/gradle.dart

@@ -930,7 +930,7 @@ Iterable<String> listApkPaths(
   ];
   if (androidBuildInfo.splitPerAbi) {
     return <String>[
-      for (AndroidArch androidArch in androidBuildInfo.targetArchs)
+      for (final AndroidArch androidArch in androidBuildInfo.targetArchs)
         <String>[
           'app',
           androidArch.archName,

packages/flutter_tools/lib/src/asset.dart

@@ -597,7 +597,7 @@ class ManifestAssetBundle implements AssetBundle {
       if (packageName == null)
         ...manifest.fontsDescriptor
       else
-        for (Font font in _parsePackageFonts(
+        for (final Font font in _parsePackageFonts(
           manifest,
           packageName,
           packageConfig,

packages/flutter_tools/lib/src/build_info.dart

@@ -324,7 +324,7 @@ class BuildInfo {
         '-Pbundle-sksl-path=$bundleSkSLPath',
       if (codeSizeDirectory != null)
         '-Pcode-size-directory=$codeSizeDirectory',
-      for (String projectArg in androidProjectArgs)
+      for (final String projectArg in androidProjectArgs)
         '-P$projectArg',
     ];
     if (dartDefineConfigJsonMap != null) {

packages/flutter_tools/lib/src/build_system/source.dart

@@ -178,7 +178,7 @@ class SourceVisitor implements ResolvedFiles {
       .getArtifactPath(artifact, platform: platform, mode: mode);
     if (environment.fileSystem.isDirectorySync(path)) {
       sources.addAll(<File>[
-        for (FileSystemEntity entity in environment.fileSystem.directory(path).listSync(recursive: true))
+        for (final FileSystemEntity entity in environment.fileSystem.directory(path).listSync(recursive: true))
           if (entity is File)
             entity,
       ]);
@@ -206,7 +206,7 @@ class SourceVisitor implements ResolvedFiles {
     final FileSystemEntity entity = environment.artifacts.getHostArtifact(artifact);
     if (entity is Directory) {
       sources.addAll(<File>[
-        for (FileSystemEntity entity in entity.listSync(recursive: true))
+        for (final FileSystemEntity entity in entity.listSync(recursive: true))
           if (entity is File)
             entity,
       ]);

packages/flutter_tools/lib/src/build_system/targets/ios.dart

@@ -665,7 +665,7 @@ Future<void> _createStubAppFramework(File outputFile, Environment environment,
     await globals.xcode!.clang(<String>[
       '-x',
       'c',
-      for (String arch in iosArchNames ?? <String>{}) ...<String>['-arch', arch],
+      for (final String arch in iosArchNames ?? <String>{}) ...<String>['-arch', arch],
       stubSource.path,
       '-dynamiclib',
       // Keep version in sync with AOTSnapshotter flag

packages/flutter_tools/lib/src/build_system/targets/localizations.dart

@@ -74,12 +74,12 @@ class GenerateLocalizationsTarget extends Target {
       <File>[
         configFile,
         if (inputs != null)
-          for (Object inputFile in inputs.whereType<Object>())
+          for (final Object inputFile in inputs.whereType<Object>())
             environment.fileSystem.file(inputFile),
       ],
       <File>[
         if (outputs != null)
-          for (Object outputFile in outputs.whereType<Object>())
+          for (final Object outputFile in outputs.whereType<Object>())
             environment.fileSystem.file(outputFile),
       ],
     );

packages/flutter_tools/lib/src/cache.dart

@@ -1290,7 +1290,7 @@ String flattenNameSubdirs(Uri url, FileSystem fileSystem) {
 /// something that doesn't.
 String _flattenNameNoSubdirs(String fileName) {
   final List<int> replacedCodeUnits = <int>[
-    for (int codeUnit in fileName.codeUnits)
+    for (final int codeUnit in fileName.codeUnits)
       ..._flattenNameSubstitutions[codeUnit] ?? <int>[codeUnit],
   ];
   return String.fromCharCodes(replacedCodeUnits);

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

@@ -147,7 +147,7 @@ abstract class BuildFrameworkCommand extends BuildSubCommand {
       'xcrun',
       'xcodebuild',
       '-create-xcframework',
-      for (Directory framework in frameworks) ...<String>[
+      for (final Directory framework in frameworks) ...<String>[
         '-framework',
         framework.path,
         ...framework.parent

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

@@ -682,7 +682,7 @@ Your $application code is in $relativeAppMain.
 
   List<String> _getSupportedPlatformsFromTemplateContext(Map<String, Object?> templateContext) {
     return <String>[
-      for (String platform in kAllCreatePlatforms)
+      for (final String platform in kAllCreatePlatforms)
         if (templateContext[platform] == true) platform,
     ];
   }

packages/flutter_tools/lib/src/linux/linux_doctor.dart

@@ -64,7 +64,7 @@ class LinuxDoctorValidator extends DoctorValidator {
 
     final Map<String, _VersionInfo?> installedVersions = <String, _VersionInfo?>{
       // Sort the check to make the call order predictable for unit tests.
-      for (String binary in _requiredBinaryVersions.keys.toList()..sort())
+      for (final String binary in _requiredBinaryVersions.keys.toList()..sort())
         binary: await _getBinaryVersion(binary),
     };
 

packages/flutter_tools/test/general.shard/devfs_test.dart

@@ -211,7 +211,7 @@ void main() {
         FakeRequest(Uri.parse('http://localhost'), method: HttpMethod.put, responseError: const OSError('Connection Reset by peer')),
         FakeRequest(Uri.parse('http://localhost'), method: HttpMethod.put, responseError: const OSError('Connection Reset by peer')),
         // This is the value of `<int>[1, 2, 3, 4, 5]` run through `osUtils.gzipLevel1Stream`.
-        FakeRequest(Uri.parse('http://localhost'), method: HttpMethod.put, body: <int>[for (List<int> chunk in expectedEncoded) ...chunk]),
+        FakeRequest(Uri.parse('http://localhost'), method: HttpMethod.put, body: <int>[for (final List<int> chunk in expectedEncoded) ...chunk]),
       ]),
       uploadRetryThrottle: Duration.zero,
     );

packages/flutter_tools/test/general.shard/fuchsia/fuchsia_device_test.dart

@@ -737,7 +737,7 @@ void main() {
             method: kListViewsMethod,
             jsonResponse: <String, Object>{
               'views': <Object>[
-                for (FlutterView view in views) view.toJson(),
+                for (final FlutterView view in views) view.toJson(),
               ],
             },
           ),