Fix Quick Fix tests that used AnalysisContext.

pkg/analysis_server/test/abstract_context.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 testing.abstract_context;
 
 import 'dart:async';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ skipping 95 matching lines @@
   File newFile(String path, [String content]) =>
       provider.newFile(provider.convertPath(path), content ?? '');
 
   Folder newFolder(String path) =>
       provider.newFolder(provider.convertPath(path));
 
   /**
    * Performs all analysis tasks in [context].
    */
   void performAllAnalysisTasks() {
+    if (enableNewAnalysisDriver) {
+      return;
+    }
     while (true) {
       engine.AnalysisResult result = context.performAnalysisTask();
       if (!result.hasMoreWork) {
         break;
       }
     }
   }
 
   void processRequiredPlugins() {
     AnalysisEngine.instance.processRequiredPlugins();
@@ skipping 74 matching lines @@
  * [engine.GeneralizingElementVisitor].
  */
 class _ElementVisitorFunctionWrapper extends GeneralizingElementVisitor {
   final _ElementVisitorFunction function;
   _ElementVisitorFunctionWrapper(this.function);
   visitElement(Element element) {
     function(element);
     super.visitElement(element);
   }
 }