Issue 21842. Fix incremental resolving of parameters of function typed parameters.

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

Index: pkg/analyzer/lib/src/generated/incremental_resolver.dart
diff --git a/pkg/analyzer/lib/src/generated/incremental_resolver.dart b/pkg/analyzer/lib/src/generated/incremental_resolver.dart
index 6a559e26452fd9f18070eb2f28894fcac186c238..c3575e222eada6140008b3f2933819930c332ed3 100644
--- a/pkg/analyzer/lib/src/generated/incremental_resolver.dart
+++ b/pkg/analyzer/lib/src/generated/incremental_resolver.dart
@@ -686,6 +686,9 @@ class DeclarationMatcher extends RecursiveAstVisitor {
         node.identifier.staticElement = element;
         (element as ElementImpl).name = newElement.name;
         (element as ElementImpl).nameOffset = newElement.nameOffset;
+        if (node is FunctionTypedFormalParameter) {
+          _setParameterElements(node.parameters, element.parameters);
+        }
       }
     }
   }