include unimported sdk lib types as low priority suggestions

pkg/analysis_server/test/services/completion/imported_computer_test.dart

 // Copyright (c) 2014, 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.services.completion.toplevel;
 
 import 'package:analysis_server/src/protocol.dart' as protocol
     show Element, ElementKind;
 import 'package:analysis_server/src/protocol.dart' hide Element, ElementKind;
 import 'package:analysis_server/src/services/completion/completion_manager.dart';
@@ skipping 99 matching lines @@
     DartCompletionCache cache = request.cache;
     if (isCached(cache.importedTypeSuggestions, completion) ||
         isCached(cache.importedVoidReturnSuggestions, completion) ||
         isCached(cache.libraryPrefixSuggestions, completion) ||
         isCached(cache.otherImportedSuggestions, completion)) {
       fail('expected $completion NOT to be cached');
     }
   }
 
   @override
-  CompletionSuggestion assertSuggestImportedConstructor(String name) {
-    return assertSuggestConstructor(name);
+  CompletionSuggestion assertSuggestImportedConstructor(String name,
+      {int relevance: DART_RELEVANCE_DEFAULT}) {
+    return assertSuggestConstructor(name, relevance: relevance);
   }
 
   @override
   CompletionSuggestion assertSuggestImportedField(String name, String type,
       {int relevance: DART_RELEVANCE_INHERITED_FIELD}) {
     return assertSuggestField(name, type, relevance: relevance);
   }
 
   @override
   CompletionSuggestion assertSuggestImportedFunction(
@@ skipping 594 matching lines @@
   }
 
   @override
   test_partFile_TypeName2() {
     return super.test_partFile_TypeName2().then((_) {
       expect(request.cache.importKey,
           'library libA;import "/testB.dart";part "/testA.dart";');
     });
   }
 }