Support parameter access in analyzer2dart.

pkg/analyzer2dart/test/end2end_test.dart

Index: pkg/analyzer2dart/test/end2end_test.dart
diff --git a/pkg/analyzer2dart/test/end2end_test.dart b/pkg/analyzer2dart/test/end2end_test.dart
index 288042db83314db5fbcb1c231950498d22af16b9..36f86eb514e15ed0ad3d7ca8b4f6af368afd4f40 100644
--- a/pkg/analyzer2dart/test/end2end_test.dart
+++ b/pkg/analyzer2dart/test/end2end_test.dart
@@ -238,6 +238,30 @@ main() $NEW_BACKEND_COMMENT
   }
 
 ''');
+
+    checkResult('''
+bar(b) {}
+foo(a) {
+  bar(a);
+}
+main() {
+  foo(null);
+}
+''', '''
+bar(b) $NEW_BACKEND_COMMENT
+  {}
+
+foo(a) $NEW_BACKEND_COMMENT
+  {
+    bar(a);
+  }
+
+main() $NEW_BACKEND_COMMENT
+  {
+    foo(null);
+  }
+
+''');
   });
 }