improve code completion abort request tests

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/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
@@ skipping 60 matching lines @@
    * Subclasses should override this method, append at least one result
    * to the [controller], and close the controller stream once complete.
    */
   Future<CompletionResult> computeSuggestions(CompletionRequestImpl request,
       CompletionGetSuggestionsParams params) async {
     //
     // Allow plugins to start computing fixes.
     //
     Map<PluginInfo, Future<plugin.Response>> pluginFutures;
     plugin.CompletionGetSuggestionsParams requestParams;
-    if (server.options.enableNewAnalysisDriver) {
-      String file = params.file;
-      int offset = params.offset;
-      AnalysisDriver driver = server.getAnalysisDriver(file);
-      if (driver != null) {
-        requestParams = new plugin.CompletionGetSuggestionsParams(file, offset);
-        pluginFutures = server.pluginManager
-            .broadcastRequest(requestParams, contextRoot: driver.contextRoot);
-      }
+    String file = params.file;
+    int offset = params.offset;
+    AnalysisDriver driver = server.getAnalysisDriver(file);
+    if (driver != null) {
+      requestParams = new plugin.CompletionGetSuggestionsParams(file, offset);
+      pluginFutures = server.pluginManager
+          .broadcastRequest(requestParams, contextRoot: driver.contextRoot);
     }
     //
     // Compute completions generated by server.
     //
     Iterable<CompletionContributor> newContributors =
         server.serverPlugin.completionContributors;
     List<CompletionSuggestion> suggestions = <CompletionSuggestion>[];
 
     const COMPUTE_SUGGESTIONS_TAG = 'computeSuggestions';
     performance.logStartTime(COMPUTE_SUGGESTIONS_TAG);
@@ skipping 193 matching lines @@
   final int replacementOffset;
 
   /**
    * The suggested completions.
    */
   final List<CompletionSuggestion> suggestions;
 
   CompletionResult(
       this.replacementOffset, this.replacementLength, this.suggestions);
 }