Renames to move closer to the new API

pkg/analysis_server/lib/src/domain_completion.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 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/constants.dart';
 import 'package:analysis_server/src/context_manager.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/completion/completion_manager.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 export 'package:analysis_server/src/services/completion/completion_manager.dart'
@@ skipping 166 matching lines @@
     if (manager == null) {
       manager = completionManagerFor(context, source);
     }
     CompletionRequest completionRequest =
         new CompletionRequestImpl(server, context, source, params.offset);
     int notificationCount = 0;
     manager.results(completionRequest).listen((CompletionResult result) {
       ++notificationCount;
       performance.logElapseTime("notification $notificationCount send", () {
         sendCompletionNotification(completionId, result.replacementOffset,
-            result.replacementLength, result.suggestions, result.last);
+            result.replacementLength, result.suggestions, result.isLast);
       });
       if (notificationCount == 1) {
         performance.logFirstNotificationComplete('notification 1 complete');
         performance.suggestionCountFirst = result.suggestions.length;
       }
-      if (result.last) {
+      if (result.isLast) {
         performance.notificationCount = notificationCount;
         performance.suggestionCountLast = result.suggestions.length;
         performance.complete();
       }
     });
     // initial response without results
     return new CompletionGetSuggestionsResult(completionId)
         .toResponse(request.id);
   }
 
@@ skipping 59 matching lines @@
     if (_sourcesChangedSubscription != null) {
       _sourcesChangedSubscription.cancel();
       _sourcesChangedSubscription = null;
     }
     if (_manager != null) {
       _manager.dispose();
       _manager = null;
     }
   }
 }