next step toward completion plugin API

pkg/analysis_server/lib/src/services/completion/common_usage_computer.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 services.completion.computer.dart.relevance;
 
 import 'package:analysis_server/src/protocol_server.dart' as protocol;
 import 'package:analysis_server/src/protocol_server.dart'
     show CompletionSuggestion, CompletionSuggestionKind;
 import 'package:analysis_server/src/provisional/completion/completion_dart.dart';
@@ skipping 27 matching lines @@
     _update(request, suggestions);
   }
 
   /**
    * Adjusts the relevance based on the given completion context.
    * The compilation unit and completion node
    * in the given completion context may not be resolved.
    */
   void _update(DartCompletionRequest request,
       Iterable<CompletionSuggestion> suggestions) {
-    var visitor = new _BestTypeVisitor(request.target.entity);
-    DartType type = request.target.containingNode.accept(visitor);
+    var visitor = new _BestTypeVisitor(request.parsedTarget.entity);
+    DartType type = request.parsedTarget.containingNode.accept(visitor);
     if (type != null) {
       Element typeElem = type.element;
       if (typeElem != null) {
         LibraryElement libElem = typeElem.library;
         if (libElem != null) {
           _updateInvocationRelevance(request, type, libElem, suggestions);
         }
       }
     }
   }
@@ skipping 68 matching lines @@
   DartType visitPropertyAccess(PropertyAccess node) {
     if (node.propertyName == entity) {
       Expression target = node.realTarget;
       if (target != null) {
         return target.bestType;
       }
     }
     return null;
   }
 }