Revert "Fix issue where DevTools would not be immediately available when using --start-paused"

packages/flutter_tools/lib/src/resident_devtools_handler.dart

@@ -35,7 +35,6 @@ abstract class ResidentDevtoolsHandler {
   Future<void> serveAndAnnounceDevTools({
     Uri? devToolsServerAddress,
     required List<FlutterDevice?> flutterDevices,
-    bool isStartPaused = false,
   });
 
   bool launchDevToolsInBrowser({required List<FlutterDevice?> flutterDevices});
@@ -72,7 +71,6 @@ class FlutterResidentDevtoolsHandler implements ResidentDevtoolsHandler {
   Future<void> serveAndAnnounceDevTools({
     Uri? devToolsServerAddress,
     required List<FlutterDevice?> flutterDevices,
-    bool isStartPaused = false,
   }) async {
     assert(!_readyToAnnounce);
     if (!_residentRunner.supportsServiceProtocol || _devToolsLauncher == null) {
@@ -90,14 +88,20 @@ class FlutterResidentDevtoolsHandler implements ResidentDevtoolsHandler {
       assert(!_readyToAnnounce);
       return;
     }
+    final List<FlutterDevice?> devicesWithExtension = await _devicesWithExtensions(flutterDevices);
+    await _maybeCallDevToolsUriServiceExtension(devicesWithExtension);
+    await _callConnectedVmServiceUriExtension(devicesWithExtension);
+
     if (_shutdown) {
       // If we're shutting down, no point reporting the debugger list.
       return;
     }
+    _readyToAnnounce = true;
+    assert(_devToolsLauncher!.activeDevToolsServer != null);
 
     final Uri? devToolsUrl = _devToolsLauncher!.devToolsUrl;
     if (devToolsUrl != null) {
-      for (final FlutterDevice? device in flutterDevices) {
+      for (final FlutterDevice? device in devicesWithExtension) {
         if (device == null) {
           continue;
         }
@@ -107,35 +111,11 @@ class FlutterResidentDevtoolsHandler implements ResidentDevtoolsHandler {
       }
     }
 
-    Future<void> callServiceExtensions() async {
-      final List<FlutterDevice?> devicesWithExtension = await _devicesWithExtensions(flutterDevices);
-      await Future.wait(
-        <Future<void>>[
-          _maybeCallDevToolsUriServiceExtension(devicesWithExtension),
-          _callConnectedVmServiceUriExtension(devicesWithExtension)
-        ]
-      );
-    }
-
-    // If the application is starting paused, we can't invoke service extensions
-    // as they're handled on the target app's paused isolate. Since invoking
-    // service extensions will block in this situation, we should wait to invoke
-    // them until after we've output the DevTools connection details.
-    if (!isStartPaused) {
-      await callServiceExtensions();
-    }
-
-    _readyToAnnounce = true;
-    assert(_devToolsLauncher!.activeDevToolsServer != null);
     if (_residentRunner.reportedDebuggers) {
       // Since the DevTools only just became available, we haven't had a chance to
       // report their URLs yet. Do so now.
       _residentRunner.printDebuggerList(includeVmService: false);
     }
-
-    if (isStartPaused) {
-      await callServiceExtensions();
-    }
   }
 
   // This must be guaranteed not to return a Future that fails.
@@ -315,11 +295,7 @@ class NoOpDevtoolsHandler implements ResidentDevtoolsHandler {
   }
 
   @override
-  Future<void> serveAndAnnounceDevTools({
-    Uri? devToolsServerAddress,
-    List<FlutterDevice?>? flutterDevices,
-    bool isStartPaused = false,
-  }) async {
+  Future<void> serveAndAnnounceDevTools({Uri? devToolsServerAddress, List<FlutterDevice?>? flutterDevices}) async {
     return;
   }
 

packages/flutter_tools/lib/src/run_cold.dart

@@ -86,7 +86,6 @@ class ColdRunner extends ResidentRunner {
         unawaited(residentDevtoolsHandler!.serveAndAnnounceDevTools(
           devToolsServerAddress: debuggingOptions.devToolsServerAddress,
           flutterDevices: flutterDevices,
-          isStartPaused: debuggingOptions.startPaused,
         ));
       }
       if (debuggingOptions.serveObservatory) {
@@ -174,7 +173,6 @@ class ColdRunner extends ResidentRunner {
         unawaited(residentDevtoolsHandler!.serveAndAnnounceDevTools(
           devToolsServerAddress: debuggingOptions.devToolsServerAddress,
           flutterDevices: flutterDevices,
-          isStartPaused: debuggingOptions.startPaused,
         ));
       }
       if (debuggingOptions.serveObservatory) {

packages/flutter_tools/lib/src/run_hot.dart

@@ -246,7 +246,6 @@ class HotRunner extends ResidentRunner {
       unawaited(residentDevtoolsHandler!.serveAndAnnounceDevTools(
         devToolsServerAddress: debuggingOptions.devToolsServerAddress,
         flutterDevices: flutterDevices,
-        isStartPaused: debuggingOptions.startPaused,
       ));
     }
 

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

@@ -156,14 +156,14 @@ void main() {
         },
       ),
       listViews,
-      listViews,
       const FakeVmServiceRequest(
         method: 'ext.flutter.activeDevToolsServerAddress',
         args: <String, Object>{
           'isolateId': '1',
           'value': 'http://localhost:8080',
         },
       ),
+      listViews,
       const FakeVmServiceRequest(
         method: 'ext.flutter.connectedVmServiceUri',
         args: <String, Object>{
@@ -314,14 +314,14 @@ void main() {
         },
       ),
       listViews,
-      listViews,
       const FakeVmServiceRequest(
         method: 'ext.flutter.activeDevToolsServerAddress',
         args: <String, Object>{
           'isolateId': '1',
           'value': 'http://localhost:8080',
         },
       ),
+      listViews,
       const FakeVmServiceRequest(
         method: 'ext.flutter.connectedVmServiceUri',
         args: <String, Object>{