rename completion computer to contributor

pkg/analysis_server/test/services/completion/invocation_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.invocation;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart';
 import 'package:analysis_server/src/services/completion/invocation_computer.dart';
 import 'package:unittest/unittest.dart';
 
 import '../../reflective_tests.dart';
 import 'completion_test_util.dart';
 
 main() {
   groupSep = ' | ';
-  runReflectiveTests(InvocationComputerTest);
+  runReflectiveTests(PrefixedElementContributorTest);
 }
 
 @reflectiveTest
-class InvocationComputerTest extends AbstractSelectorSuggestionTest {
+class PrefixedElementContributorTest extends AbstractSelectorSuggestionTest {
   @override
   CompletionSuggestion assertSuggestInvocationField(String name, String type,
       {int relevance: DART_RELEVANCE_DEFAULT, bool isDeprecated: false}) {
     return assertSuggestField(name, type,
         relevance: relevance, isDeprecated: isDeprecated);
   }
 
   /**
    * Check whether a declaration of the form [shadower] in a derived class
    * shadows a declaration of the form [shadowee] in a base class, for the
@@ skipping 29 matching lines @@
   fail_test_PrefixedIdentifier_trailingStmt_const_untyped() {
     // SimpleIdentifier  PrefixedIdentifier  ExpressionStatement
     addTestSource('const g = "hello"; f() {g.^ int y = 0;}');
     computeFast();
     return computeFull((bool result) {
       assertSuggestInvocationGetter('length', 'int');
     });
   }
 
   @override
-  void setUpComputer() {
-    computer = new InvocationComputer();
+  void setUpContributor() {
+    contributor = new PrefixedElementContributor();
   }
 
   test_generic_field() {
     addTestSource('''
 class C<T> {
   T t;
 }
 void f(C<int> c) {
   c.^
 }
@@ skipping 422 matching lines @@
 }
 void test(Derived d) {
   d.^
 }
 ''');
     return computeFull((bool result) {
       assertSuggestMethod('f', 'Base', 'void');
     });
   }
 }