Update for flutter 3.10.0 (#182)

Signed-off-by: Hidenori Matsubayashi <[email protected]>

lib/elinux_package.dart

@@ -1,10 +1,8 @@
-// Copyright 2021 Sony Group Corporation. All rights reserved.
+// Copyright 2023 Sony Group Corporation. All rights reserved.
 // 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.
 
-// @dart = 2.8
-
 import 'package:file/file.dart';
 import 'package:flutter_tools/src/application_package.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
@@ -13,7 +11,6 @@ import 'package:flutter_tools/src/cmake.dart';
 import 'package:flutter_tools/src/flutter_application_package.dart';
 import 'package:flutter_tools/src/globals.dart' as globals;
 import 'package:flutter_tools/src/project.dart';
-import 'package:meta/meta.dart';
 
 import 'elinux_cmake_project.dart';
 
@@ -28,10 +25,10 @@ class ELinuxApplicationPackageFactory extends FlutterApplicationPackageFactory {
         );
 
   @override
-  Future<ApplicationPackage> getPackageForPlatform(
+  Future<ApplicationPackage?> getPackageForPlatform(
     TargetPlatform platform, {
-    BuildInfo buildInfo,
-    File applicationBinary,
+    BuildInfo? buildInfo,
+    File? applicationBinary,
   }) async {
     if (platform == TargetPlatform.tester) {
       return applicationBinary == null
@@ -44,7 +41,7 @@ class ELinuxApplicationPackageFactory extends FlutterApplicationPackageFactory {
 }
 
 abstract class ELinuxApp extends ApplicationPackage {
-  ELinuxApp({@required String projectBundleId}) : super(id: projectBundleId);
+  ELinuxApp({required String projectBundleId}) : super(id: projectBundleId);
 
   factory ELinuxApp.fromELinuxProject(FlutterProject project) {
     return BuildableELinuxApp(
@@ -69,8 +66,8 @@ abstract class ELinuxApp extends ApplicationPackage {
 
 class PrebuiltELinuxApp extends ELinuxApp {
   PrebuiltELinuxApp({
-    @required String executable,
-    @required String outputDirectory,
+    required String executable,
+    required String outputDirectory,
   })  : _executable = executable,
         _outputDirectory = outputDirectory,
         super(projectBundleId: executable);
@@ -90,14 +87,14 @@ class PrebuiltELinuxApp extends ELinuxApp {
 }
 
 class BuildableELinuxApp extends ELinuxApp {
-  BuildableELinuxApp({@required this.project})
+  BuildableELinuxApp({required this.project})
       : super(projectBundleId: project.parent.manifest.appName);
 
   final ELinuxProject project;
 
   @override
   String executable(BuildMode buildMode, String targetArch) {
-    final String binaryName = getCmakeExecutableName(project);
+    final String? binaryName = getCmakeExecutableName(project);
     return globals.fs.path.join(
       'build/elinux/',
       targetArch,