Renames to move closer to the new API

pkg/analysis_server/test/domain_completion_test.dart

Index: pkg/analysis_server/test/domain_completion_test.dart
diff --git a/pkg/analysis_server/test/domain_completion_test.dart b/pkg/analysis_server/test/domain_completion_test.dart
index d4be8a2e8a1de23beb4ef74e036ff36be6a87e60..63cd20fffb4a08c9d979c71dc3a2c5ba6dac86bd 100644
--- a/pkg/analysis_server/test/domain_completion_test.dart
+++ b/pkg/analysis_server/test/domain_completion_test.dart
@@ -7,7 +7,7 @@ library test.domain.completion;
 import 'dart:async';
 
 import 'package:analysis_server/completion/completion_core.dart'
-    show CompletionRequest;
+    show CompletionRequest, CompletionResult;
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/channel/channel.dart';
 import 'package:analysis_server/src/constants.dart';
@@ -569,7 +569,7 @@ class MockCompletionManager implements CompletionManager {
   @override
   void computeSuggestions(CompletionRequest request) {
     ++computeCallCount;
-    CompletionResult result = new CompletionResult(0, 0, [], true);
+    CompletionResult result = new CompletionResultImpl(0, 0, [], true);
     controller.add(result);
   }