Remove unused analysisContext from completion request and contributors

pkg/analysis_server/test/domain_completion_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.domain.completion;
 
 import 'dart:async';
 
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
@@ skipping 257 matching lines @@
     ''');
     return getSuggestions().then((_) {
       expect(replacementOffset, equals(completionOffset));
       expect(replacementLength, equals(0));
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'Object');
       assertHasResult(CompletionSuggestionKind.INVOCATION, 'HtmlElement');
       assertNoResult('test');
     });
   }
 
-  @failingTest
   test_imports_aborted_new_request() async {
-    // TODO(brianwilkerson) Figure out whether this test makes sense when
-    // running the new driver. It waits for an initial empty notification then
-    // waits for a new notification. But I think that under the driver we only
-    // ever send one notification.
     addTestFile('''
         class foo { }
         c^''');
 
     // Make a request for suggestions
     Request request1 =
         new CompletionGetSuggestionsParams(testFile, completionOffset)
             .toRequest('7');
     Response response1 = await waitResponse(request1);
     var result1 = new CompletionGetSuggestionsResult.fromResponse(response1);
@@ skipping 100 matching lines @@
     server.handleRequest(new AnalysisUpdateContentParams(
         {testFile: new AddContentOverlay(revisedContent)}).toRequest('add1'));
 
     // Request code completion immediately after edit
     Response response = await waitResponse(
         new CompletionGetSuggestionsParams(testFile, completionOffset)
             .toRequest('0'));
     completionId = response.id;
     assertValidId(completionId);
     await waitForTasksFinished();
+    // wait for response to arrive
+    // because although the analysis is complete (waitForTasksFinished)
+    // the response may not yet have been processed
+    while (replacementOffset == null) {
+      await new Future.delayed(new Duration(milliseconds: 5));
+    }
     expect(replacementOffset, completionOffset - 1);
     expect(replacementLength, 1);
     assertHasResult(CompletionSuggestionKind.KEYWORD, 'library',
         relevance: DART_RELEVANCE_HIGH);
     assertHasResult(CompletionSuggestionKind.KEYWORD, 'import \'\';',
         selectionOffset: 8, relevance: DART_RELEVANCE_HIGH);
     assertHasResult(CompletionSuggestionKind.KEYWORD, 'export \'\';',
         selectionOffset: 8, relevance: DART_RELEVANCE_HIGH);
     assertHasResult(CompletionSuggestionKind.KEYWORD, 'part \'\';',
         selectionOffset: 6, relevance: DART_RELEVANCE_HIGH);
@@ skipping 363 matching lines @@
 
   @override
   Future sort(
       CompletionRequest request, Iterable<CompletionSuggestion> suggestions) {
     if (!enabled) {
       throw 'unexpected sort';
     }
     return new Future.value();
   }
 }