Suppress NO_DEFAULT_BOUND errors.

pkg/analyzer/test/src/task/strong/inferred_type_test.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.
 
 // TODO(jmesserly): this file needs to be refactored, it's a port from
 // package:dev_compiler's tests
 /// Tests for type inference.
 library analyzer.test.src.task.strong.inferred_type_test;
 
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 626 matching lines @@
     checkFile(r'''
 class A {}
 class B extends A {}
 class Foo<T extends A> {}
 void main() {
   Foo<B> foo = /*info:INFERRED_TYPE_ALLOCATION*/new Foo();
 }
     ''');
   }
 
-  @failingTest
   void test_constructors_inferenceFBounded() {
     // Regression for https://github.com/dart-lang/sdk/issues/26990
     var unit = checkFile('''
 class Clonable<T> {}
 
 class Pair<T extends Clonable<T>, U extends Clonable<U>> {
   T t;
   U u;
   Pair(this.t, this.u);
   Pair._();
@@ skipping 4740 matching lines @@
   }
 
   void setUp() {
     helper.doSetUp();
   }
 
   void tearDown() {
     helper.doTearDown();
   }
 }