Improve messages and static use for super/this-calls.

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 'dart:async';
 import 'dart:collection';
 
 import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
 import 'package:compiler/src/constants/expressions.dart';
@@ skipping 710 matching lines @@
     MockCompiler.create((MockCompiler compiler) {
       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(2, compiler.errors.length);
       Expect.equals(MessageKind.CYCLIC_CLASS_HIERARCHY,
                     compiler.errors[0].message.kind);
-      Expect.equals(MessageKind.CANNOT_FIND_CONSTRUCTOR,
+      Expect.equals(MessageKind.CANNOT_FIND_UNNAMED_CONSTRUCTOR,
                     compiler.errors[1].message.kind);
     }),
     MockCompiler.create((MockCompiler compiler) {
       compiler.parseScript("""abstract class A extends B {}
                               abstract class B extends A {}
                               class C implements A {}
                               main() { return new C(); }""");
       FunctionElement mainElement = compiler.mainApp.find(MAIN);
       compiler.resolver.resolve(mainElement);
       Expect.equals(0, compiler.warnings.length);
@@ skipping 669 matching lines @@
     }
     main() => A.m();
   ''', functionName: 'm');
   check('''
     class A {
       m() => () => await - 3;
     }
     main() => new A().m();
   ''', className: 'A');
 }