Enable caching of CPU samples collected at application startup (flutter#89600)

Author: bkonyi

packages/flutter_tools/lib/src/base/dds.dart

@@ -17,6 +17,7 @@ Future<dds.DartDevelopmentService> Function(
   bool enableAuthCodes,
   bool ipv6,
   Uri? serviceUri,
+  List<String> cachedUserTags,
 }) ddsLauncherCallback = dds.DartDevelopmentService.startDartDevelopmentService;
 
 /// Helper class to launch a [dds.DartDevelopmentService]. Allows for us to
@@ -52,6 +53,8 @@ class DartDevelopmentService {
           serviceUri: ddsUri,
           enableAuthCodes: disableServiceAuthCodes != true,
           ipv6: ipv6 == true,
+          // Enables caching of CPU samples collected during application startup.
+          cachedUserTags: const <String>['AppStartUp'],
         );
       unawaited(_ddsInstance?.done.whenComplete(() {
         if (!_completer.isCompleted) {

packages/flutter_tools/test/general.shard/resident_runner_test.dart

@@ -1806,11 +1806,12 @@ void main() {
     fakeVmServiceHost = FakeVmServiceHost(requests: <VmServiceExpectation>[]);
     final FakeDevice device = FakeDevice()
       ..dds = DartDevelopmentService();
-    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes, bool ipv6, Uri serviceUri}) {
+    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes, bool ipv6, Uri serviceUri, List<String> cachedUserTags}) {
       expect(uri, Uri(scheme: 'foo', host: 'bar'));
       expect(enableAuthCodes, isTrue);
       expect(ipv6, isFalse);
       expect(serviceUri, Uri(scheme: 'http', host: '127.0.0.1', port: 0));
+      expect(cachedUserTags, <String>['AppStartUp']);
       throw FakeDartDevelopmentServiceException(message:
         'Existing VM service clients prevent DDS from taking control.',
       );
@@ -1853,11 +1854,12 @@ void main() {
     final FakeDevice device = FakeDevice()
       ..dds = DartDevelopmentService();
     final Completer<void>done = Completer<void>();
-    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes, bool ipv6, Uri serviceUri}) async {
+    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes, bool ipv6, Uri serviceUri, List<String> cachedUserTags}) async {
       expect(uri, Uri(scheme: 'foo', host: 'bar'));
       expect(enableAuthCodes, isFalse);
       expect(ipv6, isTrue);
       expect(serviceUri, Uri(scheme: 'http', host: '::1', port: 0));
+      expect(cachedUserTags, <String>['AppStartUp']);
       done.complete();
       return null;
     };
@@ -1884,11 +1886,12 @@ void main() {
     // See https://github.com/flutter/flutter/issues/72385 for context.
     final FakeDevice device = FakeDevice()
       ..dds = DartDevelopmentService();
-    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes, bool ipv6, Uri serviceUri}) {
+    ddsLauncherCallback = (Uri uri, {bool enableAuthCodes, bool ipv6, Uri serviceUri, List<String> cachedUserTags}) {
       expect(uri, Uri(scheme: 'foo', host: 'bar'));
       expect(enableAuthCodes, isTrue);
       expect(ipv6, isFalse);
       expect(serviceUri, Uri(scheme: 'http', host: '127.0.0.1', port: 0));
+      expect(cachedUserTags, <String>['AppStartUp']);
       throw FakeDartDevelopmentServiceException(message: 'No URI');
     };
     final TestFlutterDevice flutterDevice = TestFlutterDevice(