Don't resolve FieldFormalParameter field if not in constructor.

pkg/analyzer/test/src/summary/resynthesize_common.dart

 // Copyright (c) 2015, 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 test.src.serialization.elements_test;
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 3891 matching lines @@
 
   test_invalid_setterParameter_fieldFormalParameter() {
     checkLibrary('''
 class C {
   int foo;
   void set bar(this.foo) {}
 }
 ''');
   }
 
+  test_invalid_setterParameter_fieldFormalParameter_self() {
+    checkLibrary('''
+class C {
+  set x(this.x) {}
+}
+''');
+  }
+
   test_library() {
     checkLibrary('');
   }
 
   test_library_documented() {
     checkLibrary('''
 // Extra comment so doc comment offset != 0
 /**
  * Docs
  */
@@ skipping 1195 matching lines @@
       fail('Unexpectedly tried to get unlinked summary for $uri');
     }
     return serializedUnit;
   }
 
   @override
   bool hasLibrarySummary(String uri) {
     return true;
   }
 }