Split off a Driver class from analysis server's HttpAnalysisServer.

pkg/analysis_server/bin/server.dart

Index: pkg/analysis_server/bin/server.dart
diff --git a/pkg/analysis_server/bin/server.dart b/pkg/analysis_server/bin/server.dart
index ef37d27d2b3daf55c6f72f4f0b8159eab9b7fc9f..84b770210ccd5e71efa2be786fe71b4b0b24097e 100644
--- a/pkg/analysis_server/bin/server.dart
+++ b/pkg/analysis_server/bin/server.dart
@@ -2,12 +2,12 @@
 // 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 'package:analysis_server/http_server.dart';
+import 'package:analysis_server/driver.dart';
 
 /**
  * Create and run an HTTP-based analysis server.
  */
 void main(List<String> args) {
-  HttpAnalysisServer server = new HttpAnalysisServer();
-  server.start(args);
+  Driver driver = new Driver();
+  driver.start(args);
 }