Log only valid occurences of 'All native types used ...'.

tests/compiler/dart2js/diagnostic_helper.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 dart2js.test.diagnostic_helper;
 
 import 'dart:collection';
 
 import 'package:compiler/compiler_new.dart'
     show CompilerDiagnostics, Diagnostic;
@@ skipping 47 matching lines @@
   }
 
   Iterable<CollectedMessage> get infos {
     return filterMessagesByKinds([Diagnostic.INFO]);
   }
 
   Iterable<CollectedMessage> get crashes {
     return filterMessagesByKinds([Diagnostic.CRASH]);
   }
 
+  Iterable<CollectedMessage> get verboseInfos {
+    return filterMessagesByKinds([Diagnostic.VERBOSE_INFO]);
+  }
+
   /// `true` if non-verbose messages has been collected.
   bool get hasRegularMessages {
     return messages.any((m) => m.kind != Diagnostic.VERBOSE_INFO);
   }
 
   void clear() {
     messages.clear();
   }
 
   void checkMessages(List<Expected> expectedMessages) {
@@ skipping 96 matching lines @@
       String expectedValue = '${arguments[key]}';
       String foundValue = '${message.arguments[key]}';
       if (expectedValue != foundValue) {
         return 'Expected argument $key with value $expectedValue, '
             'found $foundValue.';
       }
     }
     return null;
   };
 }