Fix bot redness.

tests/compiler/dart2js/resolver_test.dart

 // Copyright (c) 2012, 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.
 
 import "package:expect/expect.dart";
 import 'dart:collection';
 
 import "../../../sdk/lib/_internal/compiler/implementation/resolution/resolution.dart";
 import "compiler_helper.dart";
 import "parser_helper.dart";
@@ skipping 618 matching lines @@
 
 testClassHierarchy() {
   final MAIN = buildSourceString("main");
   MockCompiler compiler = new MockCompiler();
   compiler.parseScript("""class A extends B {}
                           class B extends A {}
                           main() { return new A(); }""");
   FunctionElement mainElement = compiler.mainApp.find(MAIN);
   compiler.resolver.resolve(mainElement);
   Expect.equals(0, compiler.warnings.length);
-  Expect.equals(1, compiler.errors.length);
+  Expect.equals(2, compiler.errors.length);
   Expect.equals(MessageKind.CYCLIC_CLASS_HIERARCHY,
                 compiler.errors[0].message.kind);
+  Expect.equals(MessageKind.CANNOT_FIND_CONSTRUCTOR,
+                compiler.errors[1].message.kind);
 
   compiler = new MockCompiler();
   compiler.parseScript("""abstract class A extends B {}
                           abstract class B extends A {}
                           class C implements A {}
                           main() { return new C(); }""");
   mainElement = compiler.mainApp.find(MAIN);
   compiler.resolver.resolve(mainElement);
   Expect.equals(0, compiler.warnings.length);
   Expect.equals(1, compiler.errors.length);
@@ skipping 243 matching lines @@
       }
       main() {
         new A() == new B();
       }""";
   final compiler = compileScript(script);
   Expect.equals(1, compiler.warnings.length);
   Expect.equals(MessageKind.OVERRIDE_EQUALS_NOT_HASH_CODE,
                 compiler.warnings[0].message.kind);
   Expect.equals(0, compiler.errors.length);
 }