Remove the old task model

pkg/analysis_server/lib/src/server/http_server.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 http.server;
+library analysis_server.src.server.http_server;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:analysis_server/src/channel/web_socket_channel.dart';
-import 'package:analysis_server/src/get_handler.dart';
 import 'package:analysis_server/src/socket_server.dart';
-import 'package:analysis_server/src/status/get_handler.dart' as newHandler;
-import 'package:analyzer/src/generated/engine.dart';
+import 'package:analysis_server/src/status/get_handler.dart';
 
 /**
  * Instances of the class [HttpServer] implement a simple HTTP server. The
  * primary responsibility of this server is to listen for an UPGRADE request and
  * to start an analysis server.
  */
 class HttpAnalysisServer {
   /**
    * Number of lines of print output to capture.
    */
   static const int MAX_PRINT_BUFFER_LENGTH = 1000;
 
   /**
    * An object that can handle either a WebSocket connection or a connection
    * to the client over stdio.
    */
   SocketServer socketServer;
 
   /**
    * An object that can handle GET requests.
    */
   GetHandler getHandler;
 
   /**
-   * An object that can handle GET requests when the new task model is in use.
-   */
-  newHandler.GetHandler newGetHandler;
-
-  /**
    * Future that is completed with the HTTP server once it is running.
    */
   Future<HttpServer> _server;
 
   /**
    * Last PRINT_BUFFER_LENGTH lines printed.
    */
   List<String> _printBuffer = <String>[];
 
   /**
@@ skipping 28 matching lines @@
     } catch (exception) {
       // We were unable to start the server, and there's nothing we can do about
       // it.
     }
   }
 
   /**
    * Handle a GET request received by the HTTP server.
    */
   void _handleGetRequest(HttpRequest request) {
-    if (AnalysisEngine.instance.useTaskModel) {
-      if (newGetHandler == null) {
-        newGetHandler = new newHandler.GetHandler(socketServer, _printBuffer);
-      }
-      newGetHandler.handleGetRequest(request);
-    } else {
-      if (getHandler == null) {
-        getHandler = new GetHandler(socketServer, _printBuffer);
-      }
-      getHandler.handleGetRequest(request);
+    if (getHandler == null) {
+      getHandler = new GetHandler(socketServer, _printBuffer);
     }
+    getHandler.handleGetRequest(request);
   }
 
   /**
    * Attach a listener to a newly created HTTP server.
    */
   void _handleServer(HttpServer httServer) {
     httServer.listen((HttpRequest request) {
       List<String> updateValues = request.headers[HttpHeaders.UPGRADE];
       if (updateValues != null && updateValues.indexOf('websocket') >= 0) {
         WebSocketTransformer.upgrade(request).then((WebSocket websocket) {
@@ skipping 22 matching lines @@
    */
   void _returnUnknownRequest(HttpRequest request) {
     HttpResponse response = request.response;
     response.statusCode = HttpStatus.NOT_FOUND;
     response.headers.contentType =
         new ContentType("text", "plain", charset: "utf-8");
     response.write('Not found');
     response.close();
   }
 }