fix block formatting (#29051)

diff --git a/packages/flutter_tools/lib/src/base/logger.dart b/packages/flutter_tools/lib/src/base/logger.dart
index a004d6d..97110d1 100644
--- a/packages/flutter_tools/lib/src/base/logger.dart
+++ b/packages/flutter_tools/lib/src/base/logger.dart
@@ -184,7 +184,7 @@
   }
 
   @override
-  void printTrace(String message) {}
+  void printTrace(String message) { }
 
   @override
   Status startProgress(
diff --git a/packages/flutter_tools/lib/src/commands/attach.dart b/packages/flutter_tools/lib/src/commands/attach.dart
index a71524c..eb3c4c0 100644
--- a/packages/flutter_tools/lib/src/commands/attach.dart
+++ b/packages/flutter_tools/lib/src/commands/attach.dart
@@ -272,7 +272,7 @@
     return null;
   }
 
-  Future<void> _validateArguments() async {}
+  Future<void> _validateArguments() async { }
 }
 
 class HotRunnerFactory {
diff --git a/packages/flutter_tools/lib/src/compile.dart b/packages/flutter_tools/lib/src/compile.dart
index a8cc83f..5f93671 100644
--- a/packages/flutter_tools/lib/src/compile.dart
+++ b/packages/flutter_tools/lib/src/compile.dart
@@ -79,7 +79,7 @@
   void handler(String message) {
     const String kResultPrefix = 'result ';
     if (boundaryKey == null && message.startsWith(kResultPrefix)) {
-        boundaryKey = message.substring(kResultPrefix.length);
+      boundaryKey = message.substring(kResultPrefix.length);
     } else if (message.startsWith(boundaryKey)) {
       if (message.length <= boundaryKey.length) {
         compilerOutput.complete(null);
diff --git a/packages/flutter_tools/lib/src/device.dart b/packages/flutter_tools/lib/src/device.dart
index cad682f..f92fc2f 100644
--- a/packages/flutter_tools/lib/src/device.dart
+++ b/packages/flutter_tools/lib/src/device.dart
@@ -492,5 +492,5 @@
   List<ForwardedPort> get forwardedPorts => <ForwardedPort>[];
 
   @override
-  Future<void> unforward(ForwardedPort forwardedPort) async {}
+  Future<void> unforward(ForwardedPort forwardedPort) async { }
 }
diff --git a/packages/flutter_tools/lib/src/doctor.dart b/packages/flutter_tools/lib/src/doctor.dart
index be1475f..be0d09e 100644
--- a/packages/flutter_tools/lib/src/doctor.dart
+++ b/packages/flutter_tools/lib/src/doctor.dart
@@ -312,7 +312,7 @@
   String _currentSlowWarning = 'Initializing...';
 
   @override
-  Future<ValidationResult> validate() async  {
+  Future<ValidationResult> validate() async {
     final List<ValidatorTask> tasks = <ValidatorTask>[];
     for (DoctorValidator validator in subValidators) {
       tasks.add(ValidatorTask(validator, validator.validate()));
diff --git a/packages/flutter_tools/lib/src/ios/code_signing.dart b/packages/flutter_tools/lib/src/ios/code_signing.dart
index 5bda757..183c90e 100644
--- a/packages/flutter_tools/lib/src/ios/code_signing.dart
+++ b/packages/flutter_tools/lib/src/ios/code_signing.dart
@@ -95,7 +95,7 @@
 Future<Map<String, String>> getCodeSigningIdentityDevelopmentTeam({
   BuildableIOSApp iosApp,
   bool usesTerminalUi = true,
-}) async{
+}) async {
   final Map<String, String> buildSettings = iosApp.project.buildSettings;
   if (buildSettings == null)
     return null;
diff --git a/packages/flutter_tools/lib/src/linux/linux_device.dart b/packages/flutter_tools/lib/src/linux/linux_device.dart
index 316b116..06c5301 100644
--- a/packages/flutter_tools/lib/src/linux/linux_device.dart
+++ b/packages/flutter_tools/lib/src/linux/linux_device.dart
@@ -14,7 +14,7 @@
   LinuxDevice() : super('Linux');
 
   @override
-  void clearLogs() {}
+  void clearLogs() { }
 
   @override
   DeviceLogReader getLogReader({ ApplicationPackage app }) => NoOpDeviceLogReader('linux');
diff --git a/packages/flutter_tools/lib/src/macos/macos_device.dart b/packages/flutter_tools/lib/src/macos/macos_device.dart
index 35cad44..8e82cb7 100644
--- a/packages/flutter_tools/lib/src/macos/macos_device.dart
+++ b/packages/flutter_tools/lib/src/macos/macos_device.dart
@@ -20,7 +20,7 @@
   MacOSDevice() : super('macOS');
 
   @override
-  void clearLogs() {}
+  void clearLogs() { }
 
   @override
   DeviceLogReader getLogReader({ ApplicationPackage app }) => NoOpDeviceLogReader('macos');
diff --git a/packages/flutter_tools/lib/src/test/watcher.dart b/packages/flutter_tools/lib/src/test/watcher.dart
index b442be3..031a98c 100644
--- a/packages/flutter_tools/lib/src/test/watcher.dart
+++ b/packages/flutter_tools/lib/src/test/watcher.dart
@@ -11,20 +11,20 @@
   ///
   /// If startPaused was true, the caller needs to resume in Observatory to
   /// start running the tests.
-  void handleStartedProcess(ProcessEvent event) {}
+  void handleStartedProcess(ProcessEvent event) { }
 
   /// Called after the tests finish but before the process exits.
   ///
   /// The child process won't exit until this method completes.
   /// Not called if the process died.
-  Future<void> handleFinishedTest(ProcessEvent event) async {}
+  Future<void> handleFinishedTest(ProcessEvent event) async { }
 
   /// Called when the test process crashed before connecting to test harness.
-  Future<void> handleTestCrashed(ProcessEvent event) async {}
+  Future<void> handleTestCrashed(ProcessEvent event) async { }
 
   /// Called if we timed out waiting for the test process to connect to test
   /// harness.
-  Future<void> handleTestTimedOut(ProcessEvent event) async {}
+  Future<void> handleTestTimedOut(ProcessEvent event) async { }
 }
 
 /// Describes a child process started during testing.
diff --git a/packages/flutter_tools/lib/src/tester/flutter_tester.dart b/packages/flutter_tools/lib/src/tester/flutter_tester.dart
index 1e7d1cd..bfa2aeb 100644
--- a/packages/flutter_tools/lib/src/tester/flutter_tester.dart
+++ b/packages/flutter_tools/lib/src/tester/flutter_tester.dart
@@ -65,7 +65,7 @@
   Future<TargetPlatform> get targetPlatform async => TargetPlatform.tester;
 
   @override
-  void clearLogs() {}
+  void clearLogs() { }
 
   final _FlutterTesterDeviceLogReader _logReader =
       _FlutterTesterDeviceLogReader();
diff --git a/packages/flutter_tools/lib/src/web/web_device.dart b/packages/flutter_tools/lib/src/web/web_device.dart
index d98bb97..7c23bf4 100644
--- a/packages/flutter_tools/lib/src/web/web_device.dart
+++ b/packages/flutter_tools/lib/src/web/web_device.dart
@@ -61,7 +61,7 @@
   bool get supportsScreenshot => false;
 
   @override
-  void clearLogs() {}
+  void clearLogs() { }
 
   @override
   DeviceLogReader getLogReader({ApplicationPackage app}) {
diff --git a/packages/flutter_tools/lib/src/windows/windows_device.dart b/packages/flutter_tools/lib/src/windows/windows_device.dart
index 5698952..efe7783 100644
--- a/packages/flutter_tools/lib/src/windows/windows_device.dart
+++ b/packages/flutter_tools/lib/src/windows/windows_device.dart
@@ -14,7 +14,7 @@
   WindowsDevice() : super('Windows');
 
   @override
-  void clearLogs() {}
+  void clearLogs() { }
 
   @override
   DeviceLogReader getLogReader({ ApplicationPackage app }) => NoOpDeviceLogReader('windows');
diff --git a/packages/flutter_tools/test/application_package_test.dart b/packages/flutter_tools/test/application_package_test.dart
index ff660ad..7e17356 100644
--- a/packages/flutter_tools/test/application_package_test.dart
+++ b/packages/flutter_tools/test/application_package_test.dart
@@ -225,7 +225,7 @@
     }, overrides: overrides);
     testUsingContext('Bad ipa zip-file, no payload dir', () {
       fs.file('app.ipa').createSync();
-      when(os.unzip(fs.file('app.ipa'), any)).thenAnswer((Invocation _) {});
+      when(os.unzip(fs.file('app.ipa'), any)).thenAnswer((Invocation _) { });
       final PrebuiltIOSApp iosApp = IOSApp.fromPrebuiltApp(fs.file('app.ipa'));
       expect(iosApp, isNull);
       final BufferLogger logger = context[Logger];
diff --git a/packages/flutter_tools/test/compile_test.dart b/packages/flutter_tools/test/compile_test.dart
index 5bef8cc..b149a2a 100644
--- a/packages/flutter_tools/test/compile_test.dart
+++ b/packages/flutter_tools/test/compile_test.dart
@@ -334,8 +334,7 @@
     });
   });
 
-  group('compile expression', ()
-  {
+  group('compile expression', () {
     ProcessManager mockProcessManager;
     ResidentCompiler generator;
     MockProcess mockFrontendServer;
diff --git a/packages/flutter_tools/test/crash_reporting_test.dart b/packages/flutter_tools/test/crash_reporting_test.dart
index 3d49ff2..926ce87 100644
--- a/packages/flutter_tools/test/crash_reporting_test.dart
+++ b/packages/flutter_tools/test/crash_reporting_test.dart
@@ -210,32 +210,32 @@
   set encoding(_) => throw UnsupportedError('');
 
   @override
-  void add(_) {}
+  void add(_) { }
 
   @override
-  void write(_) {}
+  void write(_) { }
 
   @override
-  void writeAll(_, [ __ = '' ]) {}
+  void writeAll(_, [ __ = '' ]) { }
 
   @override
-  void writeln([ _ = '' ]) {}
+  void writeln([ _ = '' ]) { }
 
   @override
-  void writeCharCode(_) {}
+  void writeCharCode(_) { }
 
   @override
-  void addError(_, [ __ ]) {}
+  void addError(_, [ __ ]) { }
 
   @override
-  Future<dynamic> addStream(_) async {}
+  Future<dynamic> addStream(_) async { }
 
   @override
-  Future<dynamic> flush() async {}
+  Future<dynamic> flush() async { }
 
   @override
-  Future<dynamic> close() async {}
+  Future<dynamic> close() async { }
 
   @override
-  Future<dynamic> get done async {}
+  Future<dynamic> get done async { }
 }
diff --git a/packages/flutter_tools/test/src/mocks.dart b/packages/flutter_tools/test/src/mocks.dart
index b440e3f..52c5fc9 100644
--- a/packages/flutter_tools/test/src/mocks.dart
+++ b/packages/flutter_tools/test/src/mocks.dart
@@ -470,16 +470,16 @@
 
 class MockResidentCompiler extends BasicMock implements ResidentCompiler {
   @override
-  void accept() {}
+  void accept() { }
 
   @override
   Future<CompilerOutput> reject() async { return null; }
 
   @override
-  void reset() {}
+  void reset() { }
 
   @override
-  Future<dynamic> shutdown() async {}
+  Future<dynamic> shutdown() async { }
 
   @override
   Future<CompilerOutput> compileExpression(
diff --git a/packages/flutter_tools/test/web/devices_test.dart b/packages/flutter_tools/test/web/devices_test.dart
index 562e9bf..5a843f5 100644
--- a/packages/flutter_tools/test/web/devices_test.dart
+++ b/packages/flutter_tools/test/web/devices_test.dart
@@ -26,7 +26,7 @@
         minify: anyNamed('minify'),
         enabledAssertions: anyNamed('enabledAssertions'),
       )).thenAnswer((Invocation invocation) async => 0);
-      when(mockChromeLauncher.launch(any)).thenAnswer((Invocation invocation) async {});
+      when(mockChromeLauncher.launch(any)).thenAnswer((Invocation invocation) async { });
     });
 
     testUsingContext('can build and connect to chrome', () async {