Warn about @deprecated positional parameters

pkg/analyzer/lib/src/generated/resolver.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library analyzer.src.generated.resolver;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 76 matching lines @@
    * @param errorReporter the error reporter
    */
   BestPracticesVerifier(
       this._errorReporter, TypeProvider typeProvider, this._currentLibrary,
       {TypeSystem typeSystem})
       : _futureNullType = typeProvider.futureNullType,
         _typeSystem = typeSystem ?? new TypeSystemImpl();
 
   @override
   Object visitArgumentList(ArgumentList node) {
+    for (Expression argument in node.arguments) {
+      ParameterElement parameter = argument.bestParameterElement;
+      if (parameter?.parameterKind == ParameterKind.POSITIONAL) {
+        _checkForDeprecatedMemberUse(parameter, argument);
+      }
+    }
     _checkForArgumentTypesNotAssignableInList(node);
     return super.visitArgumentList(node);
   }
 
   @override
   Object visitAsExpression(AsExpression node) {
     _checkForUnnecessaryCast(node);
     return super.visitAsExpression(node);
   }
 
@@ skipping 10776 matching lines @@
       return null;
     }
     if (identical(node.staticElement, variable)) {
       if (node.inSetterContext()) {
         result = true;
       }
     }
     return null;
   }
 }