respect show/hide combinators when generating suggestions

pkg/analysis_services/test/completion/completion_test_util.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.util;
 
 import 'dart:async';
 
 import 'package:analysis_services/completion/completion_computer.dart';
 import 'package:analysis_services/completion/completion_suggestion.dart';
@@ skipping 114 matching lines @@
 
   bool computeFast() {
     _computeFastCalled = true;
     computer
         ..context = context
         ..searchEngine = searchEngine
         ..source = testSource
         ..offset = completionOffset;
     suggestions = [];
     CompilationUnit unit = context.parseCompilationUnit(testSource);
-    return computer.computeFast(unit, suggestions);
+    AstNode node = new NodeLocator.con1(completionOffset).searchWithin(unit);
+    return computer.computeFast(unit, node, suggestions);
   }
 
   Future<bool> computeFull() {
     if (!_computeFastCalled) {
       expect(computeFast(), isFalse);
     }
     var result = context.performAnalysisTask();
     while (result.hasMoreWork) {
       result.changeNotices.forEach((ChangeNotice notice) {
         CompilationUnit unit = notice.compilationUnit;
         if (unit != null) {
           index.indexUnit(context, unit);
         }
       });
       result = context.performAnalysisTask();
     }
     LibraryElement library = context.getLibraryElement(testSource);
     expect(library, isNotNull);
     var unit = context.getResolvedCompilationUnit(testSource, library);
     expect(unit, isNotNull);
-    return computer.computeFull(unit, suggestions);
+    AstNode node = new NodeLocator.con1(completionOffset).searchWithin(unit);
+    return computer.computeFull(unit, node, suggestions);
   }
 
   @override
   void setUp() {
     super.setUp();
     index = createLocalMemoryIndex();
     searchEngine = new SearchEngineImpl(index);
     addResolvedUnit(MockSdk.LIB_CORE.path, MockSdk.LIB_CORE.content);
   }
 }