make FlutterProject synchronous (#31757)

diff --git a/packages/flutter_tools/test/application_package_test.dart b/packages/flutter_tools/test/application_package_test.dart
index 54e94fc..53fb026 100644
--- a/packages/flutter_tools/test/application_package_test.dart
+++ b/packages/flutter_tools/test/application_package_test.dart
@@ -59,7 +59,7 @@
         environment: anyNamed('environment'),
       )).thenAnswer((_) async => ProcessResult(1, 0, 'stdout', 'stderr'));
       when(mockProcessManager.runSync(any)).thenReturn(ProcessResult(1, 0, 'stdout', 'stderr'));
-      final FlutterProject project = await FlutterProject.current();
+      final FlutterProject project = FlutterProject.current();
       gradle = fs.file(project.android.hostAppGradleRoot.childFile(
         platform.isWindows ? 'gradlew.bat' : 'gradlew',
       ).path)..createSync(recursive: true);
@@ -95,7 +95,7 @@
 
     testUsingContext('Licenses available, build tools not, apk exists', () async {
       when(sdk.latestVersion).thenReturn(null);
-      final FlutterProject project = await FlutterProject.current();
+      final FlutterProject project = FlutterProject.current();
       final File gradle = project.android.hostAppGradleRoot.childFile(
         platform.isWindows ? 'gradlew.bat' : 'gradlew',
       )..createSync(recursive: true);
@@ -281,7 +281,7 @@
     testUsingContext('returns null when there is no ios or .ios directory', () async {
       fs.file('pubspec.yaml').createSync();
       fs.file('.packages').createSync();
-      final BuildableIOSApp iosApp = IOSApp.fromIosProject((await FlutterProject.fromDirectory(fs.currentDirectory)).ios);
+      final BuildableIOSApp iosApp = IOSApp.fromIosProject(FlutterProject.fromDirectory(fs.currentDirectory).ios);
 
       expect(iosApp, null);
     }, overrides: overrides);
@@ -290,7 +290,7 @@
       fs.file('pubspec.yaml').createSync();
       fs.file('.packages').createSync();
       fs.file('ios/FooBar.xcodeproj').createSync(recursive: true);
-      final BuildableIOSApp iosApp = IOSApp.fromIosProject((await FlutterProject.fromDirectory(fs.currentDirectory)).ios);
+      final BuildableIOSApp iosApp = IOSApp.fromIosProject(FlutterProject.fromDirectory(fs.currentDirectory).ios);
 
       expect(iosApp, null);
     }, overrides: overrides);
@@ -299,7 +299,7 @@
       fs.file('pubspec.yaml').createSync();
       fs.file('.packages').createSync();
       fs.file('ios/Runner.xcodeproj').createSync(recursive: true);
-      final BuildableIOSApp iosApp = IOSApp.fromIosProject((await FlutterProject.fromDirectory(fs.currentDirectory)).ios);
+      final BuildableIOSApp iosApp = IOSApp.fromIosProject(FlutterProject.fromDirectory(fs.currentDirectory).ios);
 
       expect(iosApp, null);
     }, overrides: overrides);