Instrument analyzer's type analysis and run front_end inference tests.

pkg/analyzer/lib/src/dart/ast/ast.dart

Index: pkg/analyzer/lib/src/dart/ast/ast.dart
diff --git a/pkg/analyzer/lib/src/dart/ast/ast.dart b/pkg/analyzer/lib/src/dart/ast/ast.dart
index 656b1c2edf45728f52417a3e76b25d498819e789..55737981321262a4c8f1dfb7e56025cb66a8a59f 100644
--- a/pkg/analyzer/lib/src/dart/ast/ast.dart
+++ b/pkg/analyzer/lib/src/dart/ast/ast.dart
@@ -9456,6 +9456,16 @@ class SimpleIdentifierImpl extends IdentifierImpl implements SimpleIdentifier {
         return false;
       }
     }
+    if (parent is FieldFormalParameter) {
+      if (identical(parent.identifier, target)) {
+        return false;
+      }
+    }
+    if (parent is VariableDeclaration) {
+      if (identical(parent.name, target)) {
+        return false;
+      }
+    }
     return true;
   }