Move ChangeBuilder to analyzer_plugin

pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart

Index: pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart
diff --git a/pkg/analysis_server/lib/src/utilities/change_builder_core.dart b/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart
similarity index 98%
rename from pkg/analysis_server/lib/src/utilities/change_builder_core.dart
rename to pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart
index f5c9e9cf8ff4224528288830c9010cdc6bb68bc7..632b888f58f8a0511605c1ed45c2784d3d08f96a 100644
--- a/pkg/analysis_server/lib/src/utilities/change_builder_core.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_core.dart
@@ -1,12 +1,12 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, 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/protocol/protocol_generated.dart';
-import 'package:analysis_server/src/provisional/edit/utilities/change_builder_core.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer_plugin/utilities/change_builder/change_builder_core.dart';
 
 /**
  * A builder used to build a [SourceChange].