Remove more references to AnalysisContext

pkg/analysis_server/lib/src/operation/operation_analysis.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.
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/computer/computer_closingLabels.dart';
 import 'package:analysis_server/src/computer/computer_highlights.dart';
 import 'package:analysis_server/src/computer/computer_highlights2.dart';
 import 'package:analysis_server/src/computer/computer_outline.dart';
 import 'package:analysis_server/src/computer/computer_overrides.dart';
 import 'package:analysis_server/src/domains/analysis/implemented_dart.dart';
 import 'package:analysis_server/src/protocol_server.dart' as protocol;
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 
-/**
- * Run the given function [f] with the given [context] made active.
- * Return the result of [f] invocation.
- */
-runWithActiveContext(AnalysisContext context, f()) {
-  if (context is InternalAnalysisContext && !context.isActive) {
-    context.isActive = true;
-    try {
-      return f();
-    } finally {
-      context.isActive = false;
-    }
-  } else {
-    return f();
-  }
-}
-
 Future<Null> scheduleImplementedNotification(
     AnalysisServer server, Iterable<String> files) async {
   SearchEngine searchEngine = server.searchEngine;
   if (searchEngine == null) {
     return;
   }
   for (String file in files) {
     CompilationUnit unit = server.getCachedAnalysisResult(file)?.unit;
     CompilationUnitElement unitElement = unit?.element;
     if (unitElement != null) {
@@ skipping 125 matching lines @@
 void _sendNotification(AnalysisServer server, f()) {
   ServerPerformanceStatistics.notices.makeCurrentWhile(() {
     try {
       f();
     } catch (exception, stackTrace) {
       server.sendServerErrorNotification(
           'Failed to send notification', exception, stackTrace);
     }
   });
 }