Warning fix.

pkg/analysis_server/test/services/index/dart_index_contributor_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.src.index.dart_index_contributor;
 
 import 'package:analysis_server/analysis/index/index_core.dart';
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index/index_contributor.dart';
 import 'package:analysis_server/src/services/index/index_store.dart';
@@ skipping 1484 matching lines @@
     return _assertRecordedRelation(new IndexableElement(expectedElement),
         expectedRelationship, expectedLocation);
   }
 
   /**
    * Asserts that [recordedRelations] has an item with the expected properties.
    */
   LocationImpl _assertRecordedRelationForName(String expectedName,
       RelationshipImpl expectedRelationship,
       ExpectedLocation expectedLocation) {
-    _assertRecordedRelationForElement(
+    return _assertRecordedRelationForElement(
         new NameElement(expectedName), expectedRelationship, expectedLocation);
   }
 
   ExpectedLocation _expectedLocation(Element element, String search,
       {int length: -1, bool isQualified: false, bool isResolved: true}) {
     int offset = findOffset(search);
     if (length == -1) {
       length = getLeadingIdentifierLength(search);
     }
     return new ExpectedLocation(
@@ skipping 49 matching lines @@
 
   RecordedRelation(this.indexable, this.relationship, this.location);
 
   @override
   String toString() {
     return 'RecordedRelation(indexable=$indexable; relationship=$relationship; '
         'location=$location; flags=' '${location.isQualified ? "Q" : ""}'
         '${location.isResolved ? "R" : ""})';
   }
 }