[ResidentFrontendServer] Remove explicit getters from the ResidentCompilerInfo class

CoreLibraryReviewExempt: This CL does not include any core library API
changes, only VM Service implementation changes within
sdk/lib/vmservice/running_isolates.dart.
Change-Id: Icbd3a8fe6c10c2c1ef3d1f4737639f32227239c2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/401644
Reviewed-by: Ben Konyi <[email protected]>

Author: derekxu16

pkg/frontend_server/lib/resident_frontend_server_utils.dart

@@ -8,21 +8,17 @@ import 'dart:io' show Directory, File, InternetAddress, Socket;
 import 'package:path/path.dart' as path;
 
 final class ResidentCompilerInfo {
-  final String? _sdkHash;
-  final InternetAddress _address;
-  final int _port;
-
   /// The SDK hash that kernel files compiled using the Resident Frontend
   /// Compiler associated with this object will be stamped with.
-  String? get sdkHash => _sdkHash;
+  final String? sdkHash;
 
   /// The address that the Resident Frontend Compiler associated with this
   /// object is listening from.
-  InternetAddress get address => _address;
+  final InternetAddress address;
 
   /// The port number that the Resident Frontend Compiler associated with this
   /// object is listening on.
-  int get port => _port;
+  final int port;
 
   /// Extracts the value associated with a key from [entries], where [entries]
   /// is a [String] with the format '$key1:$value1 $key2:$value2 ...'.
@@ -47,12 +43,10 @@ final class ResidentCompilerInfo {
   }
 
   ResidentCompilerInfo._({
-    required String? sdkHash,
-    required int port,
-    required InternetAddress address,
-  })  : _sdkHash = sdkHash,
-        _port = port,
-        _address = address;
+    required this.sdkHash,
+    required this.port,
+    required this.address,
+  });
 }
 
 /// Returns the absolute path to the cached kernel file associated with

sdk/lib/vmservice/running_isolates.dart

@@ -86,21 +86,17 @@ class RunningIsolates implements MessageRouter {
 // `package:frontend_server`.
 
 final class _ResidentCompilerInfo {
-  final String? _sdkHash;
-  final InternetAddress _address;
-  final int _port;
-
   /// The SDK hash that kernel files compiled using the Resident Frontend
   /// Compiler associated with this object will be stamped with.
-  String? get sdkHash => _sdkHash;
+  final String? sdkHash;
 
   /// The address that the Resident Frontend Compiler associated with this
   /// object is listening from.
-  InternetAddress get address => _address;
+  final InternetAddress address;
 
   /// The port number that the Resident Frontend Compiler associated with this
   /// object is listening on.
-  int get port => _port;
+  final int port;
 
   /// Extracts the value associated with a key from [entries], where [entries]
   /// is a [String] with the format '$key1:$value1 $key2:$value2 $key3:$value3 ...'.
@@ -126,12 +122,10 @@ final class _ResidentCompilerInfo {
   }
 
   _ResidentCompilerInfo._({
-    required String? sdkHash,
-    required int port,
-    required InternetAddress address,
-  }) : _sdkHash = sdkHash,
-       _port = port,
-       _address = address;
+    required this.sdkHash,
+    required this.port,
+    required this.address,
+  });
 }
 
 /// Class that knows how to orchestrate expression evaluation in dart2 world.