[flutter_tools] move service extensions off of deprecated vm service (#55012)

packages/flutter_tools/lib/src/device.dart

diff --git a/packages/flutter_tools/lib/src/device.dart b/packages/flutter_tools/lib/src/device.dart
index 3286a17..976e941 100644
--- a/packages/flutter_tools/lib/src/device.dart
+++ b/packages/flutter_tools/lib/src/device.dart
@@ -6,6 +6,7 @@
 import 'dart:math' as math;
 
 import 'package:meta/meta.dart';
+import 'package:vm_service/vm_service.dart' as vm_service;
 
 import 'android/android_device_discovery.dart';
 import 'android/android_workflow.dart';
@@ -25,7 +26,6 @@
 import 'macos/macos_device.dart';
 import 'project.dart';
 import 'tester/flutter_tester.dart';
-import 'vmservice.dart';
 import 'web/web_device.dart';
 import 'windows/windows_device.dart';
 
@@ -755,7 +755,7 @@
 
   /// Some logs can be obtained from a VM service stream.
   /// Set this after the VM services are connected.
-  VMService connectedVMService;
+  vm_service.VmService connectedVMService;
 
   @override
   String toString() => name;
@@ -785,7 +785,7 @@
   int appPid;
 
   @override
-  VMService connectedVMService;
+  vm_service.VmService connectedVMService;
 
   @override
   Stream<String> get logLines => const Stream<String>.empty();