Move LocalDeclarationVisitor for use by contributors that will be moved to analyzer_plugin

pkg/analyzer_plugin/test/src/utilities/visitors/local_declaration_visitor_test.dart

Index: pkg/analyzer_plugin/test/src/utilities/visitors/local_declaration_visitor_test.dart
diff --git a/pkg/analysis_server/test/services/completion/dart/local_declaration_visitor_test.dart b/pkg/analyzer_plugin/test/src/utilities/visitors/local_declaration_visitor_test.dart
similarity index 94%
rename from pkg/analysis_server/test/services/completion/dart/local_declaration_visitor_test.dart
rename to pkg/analyzer_plugin/test/src/utilities/visitors/local_declaration_visitor_test.dart
index 2c54323e107139d4a4658b35976225108370b298..6329940c951ae938e996dcbb62402671dcc94b53 100644
--- a/pkg/analysis_server/test/services/completion/dart/local_declaration_visitor_test.dart
+++ b/pkg/analyzer_plugin/test/src/utilities/visitors/local_declaration_visitor_test.dart
@@ -1,14 +1,14 @@
-// Copyright (c) 2014, 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 'package:analysis_server/src/services/completion/dart/local_declaration_visitor.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart';
 import 'package:analyzer/src/generated/parser.dart';
+import 'package:analyzer_plugin/src/utilities/visitors/local_declaration_visitor.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';