Move Index and IndexStore implementations into Engine.

pkg/analyzer/test/index/store/test_all.dart

Index: pkg/analyzer/test/index/store/test_all.dart
diff --git a/pkg/analysis_server/test/index/store/test_all.dart b/pkg/analyzer/test/index/store/test_all.dart
similarity index 95%
rename from pkg/analysis_server/test/index/store/test_all.dart
rename to pkg/analyzer/test/index/store/test_all.dart
index 4e67d6b9142618e5ab2e977ffd0b49e2eb3a9a5a..fb01bc64b4d0c2f73934583e6e634b724099790b 100644
--- a/pkg/analysis_server/test/index/store/test_all.dart
+++ b/pkg/analyzer/test/index/store/test_all.dart
@@ -2,7 +2,7 @@
 // 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 test.index.store;
+library test.engine.src.index.store;
 
 import 'package:unittest/unittest.dart';