indent formal parameters correctly (#41644)

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

@@ -164,9 +164,7 @@ class MatrixUtils {
   }
 
   static Float64List _minMax;
-  static void _accumulate(Float64List m, double x, double y,
-      bool first, bool isAffine)
-  {
+  static void _accumulate(Float64List m, double x, double y, bool first, bool isAffine) {
     final double w = isAffine ? 1.0 : 1.0 / (m[3] * x + m[7] * y + m[15]);
     final double tx = (m[0] * x + m[4] * y + m[12]) * w;
     final double ty = (m[1] * x + m[5] * y + m[13]) * w;

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

@@ -99,9 +99,10 @@ abstract class ShaderWarmUp {
 /// issues seen so far.
 class DefaultShaderWarmUp extends ShaderWarmUp {
   /// Allow [DefaultShaderWarmUp] to be used as the default value of parameters.
-  const DefaultShaderWarmUp(
-      {this.drawCallSpacing = 0.0,
-      this.canvasSize = const ui.Size(100.0, 100.0)});
+  const DefaultShaderWarmUp({
+    this.drawCallSpacing = 0.0,
+    this.canvasSize = const ui.Size(100.0, 100.0),
+  });
 
   /// Constant that can be used to space out draw calls for visualizing the draws
   /// for debugging purposes (example: 80.0).  Be sure to also change your canvas

packages/flutter/test/material/dropdown_test.dart

@@ -1291,9 +1291,7 @@ void main() {
     expect(selectedIndex, 13);
   });
 
-  testWidgets('Dropdown button will accept widgets as its underline', (
-      WidgetTester tester) async {
-
+  testWidgets('Dropdown button will accept widgets as its underline', (WidgetTester tester) async {
     const BoxDecoration decoration = BoxDecoration(
       border: Border(bottom: BorderSide(color: Color(0xFFCCBB00), width: 4.0)),
     );

packages/flutter/test/rendering/recording_canvas.dart

@@ -104,30 +104,55 @@ class TestRecordingPaintingContext extends ClipContext implements PaintingContex
   }
 
   @override
-  ClipRectLayer pushClipRect(bool needsCompositing, Offset offset, Rect clipRect,
-      PaintingContextCallback painter, { Clip clipBehavior = Clip.hardEdge, ClipRectLayer oldLayer }) {
+  ClipRectLayer pushClipRect(
+    bool needsCompositing,
+    Offset offset,
+    Rect clipRect,
+    PaintingContextCallback painter, {
+    Clip clipBehavior = Clip.hardEdge,
+    ClipRectLayer oldLayer,
+  }) {
     clipRectAndPaint(clipRect.shift(offset), clipBehavior, clipRect.shift(offset), () => painter(this, offset));
     return null;
   }
 
   @override
-  ClipRRectLayer pushClipRRect(bool needsCompositing, Offset offset, Rect bounds, RRect clipRRect,
-      PaintingContextCallback painter, { Clip clipBehavior = Clip.antiAlias, ClipRRectLayer oldLayer }) {
+  ClipRRectLayer pushClipRRect(
+    bool needsCompositing,
+    Offset offset,
+    Rect bounds,
+    RRect clipRRect,
+    PaintingContextCallback painter, {
+    Clip clipBehavior = Clip.antiAlias,
+    ClipRRectLayer oldLayer,
+  }) {
     assert(clipBehavior != null);
     clipRRectAndPaint(clipRRect.shift(offset), clipBehavior, bounds.shift(offset), () => painter(this, offset));
     return null;
   }
 
   @override
-  ClipPathLayer pushClipPath(bool needsCompositing, Offset offset, Rect bounds, Path clipPath,
-      PaintingContextCallback painter, { Clip clipBehavior = Clip.antiAlias, ClipPathLayer oldLayer }) {
+  ClipPathLayer pushClipPath(
+    bool needsCompositing,
+    Offset offset,
+    Rect bounds,
+    Path clipPath,
+    PaintingContextCallback painter, {
+    Clip clipBehavior = Clip.antiAlias,
+    ClipPathLayer oldLayer,
+  }) {
     clipPathAndPaint(clipPath.shift(offset), clipBehavior, bounds.shift(offset), () => painter(this, offset));
     return null;
   }
 
   @override
-  TransformLayer pushTransform(bool needsCompositing, Offset offset, Matrix4 transform,
-      PaintingContextCallback painter, { TransformLayer oldLayer }) {
+  TransformLayer pushTransform(
+    bool needsCompositing,
+    Offset offset,
+    Matrix4 transform,
+    PaintingContextCallback painter, {
+    TransformLayer oldLayer,
+  }) {
     canvas.save();
     canvas.transform(transform.storage);
     painter(this, offset);

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

@@ -227,7 +227,8 @@ class AndroidDevice extends Device {
     List<String> params, {
     String workingDirectory,
     bool allowReentrantFlutter = false,
-        Map<String, String> environment}) {
+    Map<String, String> environment,
+  }) {
     return processUtils.runSync(
       adbCommandForDevice(params),
       throwOnError: true,

packages/flutter_tools/lib/src/base/async_guard.dart

@@ -79,9 +79,10 @@ import 'dart:async';
 /// [onError] must have type `FutureOr<T> Function(Object error)` or
 /// `FutureOr<T> Function(Object error, StackTrace stackTrace)` otherwise an
 /// [ArgumentError] will be thrown synchronously.
-Future<T> asyncGuard<T>(Future<T> Function() fn, {
+Future<T> asyncGuard<T>(
+  Future<T> Function() fn, {
   Function onError,
-  }) {
+}) {
   if (onError != null &&
       onError is! _UnaryOnError<T> &&
       onError is! _BinaryOnError<T>) {

packages/flutter_tools/lib/src/base/file_system.dart

@@ -71,12 +71,10 @@ void ensureDirectoryExists(String filePath) {
 /// Skips files if [shouldCopyFile] returns `false`.
 void copyDirectorySync(
   Directory srcDir,
-  Directory destDir,
-  {
+  Directory destDir, {
   bool shouldCopyFile(File srcFile, File destFile),
   void onFileCopied(File srcFile, File destFile),
-  }
-) {
+}) {
   if (!srcDir.existsSync()) {
     throw Exception('Source directory "${srcDir.path}" does not exist, nothing to copy');
   }

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

@@ -629,8 +629,14 @@ void verifyOutputDirectories(List<File> outputs, Environment environment, Target
 
 /// A node in the build graph.
 class Node {
-  Node(this.target, this.inputs, this.outputs, this.dependencies,
-      Environment environment, this.missingDepfile) {
+  Node(
+    this.target,
+    this.inputs,
+    this.outputs,
+    this.dependencies,
+    Environment environment,
+    this.missingDepfile,
+  ) {
     final File stamp = target._findStampFile(environment);
 
     // If the stamp file doesn't exist, we haven't run this step before and

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

@@ -215,8 +215,7 @@ abstract class Source {
   /// The source is provided by an [Artifact].
   ///
   /// If [artifact] points to a directory then all child files are included.
-  const factory Source.artifact(Artifact artifact, {TargetPlatform platform,
-      BuildMode mode}) = _ArtifactSource;
+  const factory Source.artifact(Artifact artifact, {TargetPlatform platform, BuildMode mode}) = _ArtifactSource;
 
   /// The source is provided by a depfile generated at runtime.
   ///

packages/flutter_tools/lib/src/fuchsia/amber_ctl.dart

@@ -92,8 +92,7 @@ class FuchsiaAmberCtl {
 
   /// Instructs the pkg_resolver instance running on [device] to prefetch the
   /// package [packageName].
-  Future<bool> pkgCtlResolve(FuchsiaDevice device, FuchsiaPackageServer server,
-                             String packageName) async {
+  Future<bool> pkgCtlResolve(FuchsiaDevice device, FuchsiaPackageServer server, String packageName) async {
     final String packageUrl = 'fuchsia-pkg://${server.name}/$packageName';
     final RunResult result = await device.shell('pkgctl resolve $packageUrl');
     return result.exitCode == 0;

packages/flutter_tools/lib/src/fuchsia/fuchsia_build.dart

@@ -34,10 +34,11 @@ Future<void> _timedBuildStep(String name, Future<void> Function() action) async
 // 2. Create a manifest file for assets.
 // 3. Using these manifests, use the Fuchsia SDK 'pm' tool to create the
 //    Fuchsia package.
-Future<void> buildFuchsia(
-    {@required FuchsiaProject fuchsiaProject,
+Future<void> buildFuchsia({
+  @required FuchsiaProject fuchsiaProject,
   @required String target, // E.g., lib/main.dart
-    BuildInfo buildInfo = BuildInfo.debug}) async {
+  BuildInfo buildInfo = BuildInfo.debug,
+}) async {
   final Directory outDir = fs.directory(getFuchsiaBuildDirectory());
   if (!outDir.existsSync()) {
     outDir.createSync(recursive: true);
@@ -55,7 +56,8 @@ Future<void> buildFuchsia(
 Future<void> _buildAssets(
   FuchsiaProject fuchsiaProject,
   String target, // lib/main.dart
-    BuildInfo buildInfo) async {
+  BuildInfo buildInfo,
+) async {
   final String assetDir = getAssetBuildDirectory();
   final AssetBundle assets = await buildAssets(
     manifestPath: fuchsiaProject.project.pubspecFile.path,
@@ -112,7 +114,8 @@ void _rewriteCmx(BuildMode mode, File src, File dst) {
 Future<void> _buildPackage(
   FuchsiaProject fuchsiaProject,
   String target, // lib/main.dart
-    BuildInfo buildInfo) async {
+  BuildInfo buildInfo,
+) async {
   final String outDir = getFuchsiaBuildDirectory();
   final String pkgDir = fs.path.join(outDir, 'pkg');
   final String appName = fuchsiaProject.project.manifest.appName;

packages/flutter_tools/lib/src/fuchsia/fuchsia_device.dart

@@ -498,9 +498,9 @@ class FuchsiaDevice extends Device {
     return null;
   }
 
-  FuchsiaIsolateDiscoveryProtocol getIsolateDiscoveryProtocol(
-          String isolateName) =>
-      FuchsiaIsolateDiscoveryProtocol(this, isolateName);
+  FuchsiaIsolateDiscoveryProtocol getIsolateDiscoveryProtocol(String isolateName) {
+    return FuchsiaIsolateDiscoveryProtocol(this, isolateName);
+  }
 
   @override
   bool isSupportedForProject(FlutterProject flutterProject) {

packages/flutter_tools/lib/src/fuchsia/fuchsia_pm.dart

@@ -58,8 +58,7 @@ class FuchsiaPM {
   ///
   /// where $APPNAME is the same [appName] passed to [init], and meta/package
   /// is set up to be the file `meta/package` created by [init].
-  Future<bool> build(
-      String buildPath, String keyPath, String manifestPath) {
+  Future<bool> build(String buildPath, String keyPath, String manifestPath) {
     return _runPMCommand(<String>[
       '-o',
       buildPath,

packages/flutter_tools/lib/src/ios/xcodeproj.dart

@@ -279,7 +279,8 @@ class XcodeProjectInterpreter {
   /// Asynchronously retrieve xcode build settings. This one is preferred for
   /// new call-sites.
   Future<Map<String, String>> getBuildSettings(
-      String projectPath, String target, {
+    String projectPath,
+    String target, {
     Duration timeout = const Duration(minutes: 1),
   }) async {
     final Status status = Status.withSpinner(

packages/flutter_tools/lib/src/macos/cocoapod_utils.dart

@@ -14,8 +14,7 @@ import 'cocoapods.dart';
 
 /// For a given build, determines whether dependencies have changed since the
 /// last call to processPods, then calls processPods with that information.
-Future<void> processPodsIfNeeded(XcodeBasedProject xcodeProject,
-    String buildDirectory, BuildMode buildMode) async {
+Future<void> processPodsIfNeeded(XcodeBasedProject xcodeProject, String buildDirectory, BuildMode buildMode) async {
   final FlutterProject project = xcodeProject.parent;
   // Ensure that the plugin list is up to date, since hasPlugins relies on it.
   refreshPluginsList(project);

packages/flutter_tools/lib/src/mdns_discovery.dart

@@ -157,8 +157,13 @@ class MDnsObservatoryDiscoveryResult {
   final String authCode;
 }
 
-Future<Uri> buildObservatoryUri(Device device,
-    String host, int devicePort, [int observatoryPort, String authCode]) async {
+Future<Uri> buildObservatoryUri(
+  Device device,
+  String host,
+  int devicePort, [
+  int observatoryPort,
+  String authCode,
+]) async {
   String path = '/';
   if (authCode != null) {
     path = authCode;

packages/flutter_tools/lib/src/runner/flutter_command.dart

@@ -484,8 +484,12 @@ abstract class FlutterCommand extends Command<void> {
   ///
   /// For example, the command path (e.g. `build/apk`) and the result,
   /// as well as the time spent running it.
-  void _sendPostUsage(String commandPath, FlutterCommandResult commandResult,
-                      DateTime startTime, DateTime endTime) {
+  void _sendPostUsage(
+    String commandPath,
+    FlutterCommandResult commandResult,
+    DateTime startTime,
+    DateTime endTime,
+  ) {
     if (commandPath == null) {
       return;
     }

packages/flutter_tools/lib/src/test/flutter_web_platform.dart

@@ -205,8 +205,12 @@ class FlutterWebPlatform extends PlatformPlugin {
   }
 
   @override
-  Future<RunnerSuite> load(String path, SuitePlatform platform,
-      SuiteConfiguration suiteConfig, Object message) async {
+  Future<RunnerSuite> load(
+    String path,
+    SuitePlatform platform,
+    SuiteConfiguration suiteConfig,
+    Object message,
+  ) async {
     if (_closed) {
       return null;
     }
@@ -509,8 +513,11 @@ class BrowserManager {
   /// Returns the browser manager, or throws an [ApplicationException] if a
   /// connection fails to be established.
   static Future<BrowserManager> start(
-      Runtime runtime, Uri url, Future<WebSocketChannel> future,
-      {bool debug = false}) async {
+    Runtime runtime,
+    Uri url,
+    Future<WebSocketChannel> future, {
+    bool debug = false,
+  }) async {
     final Chrome chrome =
         await chromeLauncher.launch(url.toString(), headless: true);
 
@@ -671,8 +678,12 @@ class BrowserManager {
 ///
 /// All methods forward directly to [BrowserManager].
 class _BrowserEnvironment implements Environment {
-  _BrowserEnvironment(this._manager, this.observatoryUrl,
-      this.remoteDebuggerUrl, this.onRestart);
+  _BrowserEnvironment(
+    this._manager,
+    this.observatoryUrl,
+    this.remoteDebuggerUrl,
+    this.onRestart,
+  );
 
   final BrowserManager _manager;
 

packages/flutter_tools/test/commands.shard/hermetic/build_fuchsia_test.dart

@@ -180,8 +180,7 @@ class MockFuchsiaPM extends Mock implements FuchsiaPM {
   }
 
   @override
-  Future<bool> build(
-      String buildPath, String keyPath, String manifestPath) async {
+  Future<bool> build(String buildPath, String keyPath, String manifestPath) async {
     if (!fs.file(fs.path.join(buildPath, 'meta', 'package')).existsSync() ||
         !fs.file(keyPath).existsSync() ||
         !fs.file(manifestPath).existsSync()) {
@@ -192,8 +191,7 @@ class MockFuchsiaPM extends Mock implements FuchsiaPM {
   }
 
   @override
-  Future<bool> archive(
-      String buildPath, String keyPath, String manifestPath) async {
+  Future<bool> archive(String buildPath, String keyPath, String manifestPath) async {
     if (!fs.file(fs.path.join(buildPath, 'meta', 'package')).existsSync() ||
         !fs.file(keyPath).existsSync() ||
         !fs.file(manifestPath).existsSync()) {

packages/flutter_tools/test/commands.shard/permeable/test_test.dart

@@ -133,7 +133,7 @@ Future<void> _testFile(
   String testDirectory, {
   Matcher exitCode,
   List<String> extraArguments = const <String>[],
-    }) async {
+}) async {
   exitCode ??= isNonZero;
   final String fullTestExpectation = fs.path.join(testDirectory, '${testName}_expectation.txt');
   final File expectationFile = fs.file(fullTestExpectation);

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

@@ -336,8 +336,7 @@ void main() {
   });
 
   group(FuchsiaIsolateDiscoveryProtocol, () {
-    Future<Uri> findUri(
-        List<MockFlutterView> views, String expectedIsolateName) {
+    Future<Uri> findUri(List<MockFlutterView> views, String expectedIsolateName) {
       final MockPortForwarder portForwarder = MockPortForwarder();
       final MockVMService vmService = MockVMService();
       final MockVM vm = MockVM();
@@ -645,7 +644,7 @@ Process _createMockProcess({
   String stdout = '',
   String stderr = '',
   bool persistent = false,
-  }) {
+}) {
   final Stream<List<int>> stdoutStream = Stream<List<int>>.fromIterable(<List<int>>[
     utf8.encode(stdout),
   ]);
@@ -717,9 +716,9 @@ class FuchsiaDeviceWithFakeDiscovery extends FuchsiaDevice {
   FuchsiaDeviceWithFakeDiscovery(String id, {String name}) : super(id, name: name);
 
   @override
-  FuchsiaIsolateDiscoveryProtocol getIsolateDiscoveryProtocol(
-        String isolateName) =>
-    FakeFuchsiaIsolateDiscoveryProtocol();
+  FuchsiaIsolateDiscoveryProtocol getIsolateDiscoveryProtocol(String isolateName) {
+    return FakeFuchsiaIsolateDiscoveryProtocol();
+  }
 }
 
 class FakeFuchsiaIsolateDiscoveryProtocol implements FuchsiaIsolateDiscoveryProtocol {
@@ -752,8 +751,7 @@ class FakeFuchsiaAmberCtl implements FuchsiaAmberCtl {
   }
 
   @override
-  Future<bool> pkgCtlResolve(FuchsiaDevice device, FuchsiaPackageServer server,
-                             String packageName) async {
+  Future<bool> pkgCtlResolve(FuchsiaDevice device, FuchsiaPackageServer server, String packageName) async {
     return true;
   }
 
@@ -785,8 +783,7 @@ class FailingAmberCtl implements FuchsiaAmberCtl {
   }
 
   @override
-  Future<bool> pkgCtlResolve(FuchsiaDevice device, FuchsiaPackageServer server,
-                             String packageName) async {
+  Future<bool> pkgCtlResolve(FuchsiaDevice device, FuchsiaPackageServer server, String packageName) async {
     return false;
   }
 
@@ -910,8 +907,7 @@ class FakeFuchsiaPM implements FuchsiaPM {
   }
 
   @override
-  Future<bool> build(
-      String buildPath, String keyPath, String manifestPath) async {
+  Future<bool> build(String buildPath, String keyPath, String manifestPath) async {
     if (!fs.file(fs.path.join(buildPath, 'meta', 'package')).existsSync() ||
         !fs.file(keyPath).existsSync() ||
         !fs.file(manifestPath).existsSync()) {
@@ -922,8 +918,7 @@ class FakeFuchsiaPM implements FuchsiaPM {
   }
 
   @override
-  Future<bool> archive(
-      String buildPath, String keyPath, String manifestPath) async {
+  Future<bool> archive(String buildPath, String keyPath, String manifestPath) async {
     if (!fs.file(fs.path.join(buildPath, 'meta', 'package')).existsSync() ||
         !fs.file(keyPath).existsSync() ||
         !fs.file(manifestPath).existsSync()) {
@@ -975,14 +970,12 @@ class FailingPM implements FuchsiaPM {
   }
 
   @override
-  Future<bool> build(
-      String buildPath, String keyPath, String manifestPath) async {
+  Future<bool> build(String buildPath, String keyPath, String manifestPath) async {
     return false;
   }
 
   @override
-  Future<bool> archive(
-      String buildPath, String keyPath, String manifestPath) async {
+  Future<bool> archive(String buildPath, String keyPath, String manifestPath) async {
     return false;
   }
 

packages/flutter_tools/test/general.shard/web/workflow_test.dart

@@ -88,13 +88,14 @@ void main() {
 class MockProcessManager extends Mock implements ProcessManager {}
 
 class MockPlatform extends Mock implements Platform {
-  MockPlatform(
-      {this.windows = false,
+  MockPlatform({
+    this.windows = false,
     this.macos = false,
     this.linux = false,
     this.environment = const <String, String>{
       kChromeEnvironment: 'chrome',
-      }});
+    },
+  });
 
   final bool windows;
   final bool macos;

packages/flutter_tools/test/general.shard/windows/visual_studio_test.dart

@@ -67,10 +67,11 @@ void main() {
   // Sets up the mock environment so that searching for Visual Studio with
   // exactly the given required components will provide a result. By default it
   // return a preset installation, but the response can be overridden.
-  void setMockVswhereResponse(
-      [List<String> requiredComponents,
+  void setMockVswhereResponse([
+    List<String> requiredComponents,
     List<String> additionalArguments,
-      Map<String, dynamic> response]) {
+    Map<String, dynamic> response,
+  ]) {
     fs.file(vswherePath).createSync(recursive: true);
     fs.file(vcvarsPath).createSync(recursive: true);
 

packages/flutter_tools/test/src/mocks.dart

@@ -197,7 +197,7 @@ ProcessFactory flakyProcessFactory({
   Duration delay,
   Stream<List<int>> Function() stdout,
   Stream<List<int>> Function() stderr,
-  }) {
+}) {
   int flakesLeft = flakes;
   stdout ??= () => const Stream<List<int>>.empty();
   stderr ??= () => const Stream<List<int>>.empty();

packages/flutter_tools/test/src/testbed.dart

@@ -188,25 +188,19 @@ class FakeHttpClient implements HttpClient {
   String userAgent;
 
   @override
-  void addCredentials(
-      Uri url, String realm, HttpClientCredentials credentials) {}
+  void addCredentials(Uri url, String realm, HttpClientCredentials credentials) {}
 
   @override
-  void addProxyCredentials(
-      String host, int port, String realm, HttpClientCredentials credentials) {}
+  void addProxyCredentials(String host, int port, String realm, HttpClientCredentials credentials) {}
 
   @override
-  set authenticate(
-      Future<bool> Function(Uri url, String scheme, String realm) f) {}
+  set authenticate(Future<bool> Function(Uri url, String scheme, String realm) f) {}
 
   @override
-  set authenticateProxy(
-      Future<bool> Function(String host, int port, String scheme, String realm)
-          f) {}
+  set authenticateProxy(Future<bool> Function(String host, int port, String scheme, String realm) f) {}
 
   @override
-  set badCertificateCallback(
-      bool Function(X509Certificate cert, String host, int port) callback) {}
+  set badCertificateCallback(bool Function(X509Certificate cert, String host, int port) callback) {}
 
   @override
   void close({bool force = false}) {}

packages/flutter_tools/tool/tool_coverage.dart

@@ -68,8 +68,12 @@ class VMPlatform extends PlatformPlugin {
       throw UnimplementedError();
 
   @override
-  Future<RunnerSuite> load(String codePath, SuitePlatform platform,
-      SuiteConfiguration suiteConfig, Object message) async {
+  Future<RunnerSuite> load(
+    String codePath,
+    SuitePlatform platform,
+    SuiteConfiguration suiteConfig,
+    Object message,
+  ) async {
     final ReceivePort receivePort = ReceivePort();
     Isolate isolate;
     try {