Move Index and IndexStore implementations into Engine.

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

Index: pkg/analyzer/test/index/store/collection_test.dart
diff --git a/pkg/analysis_server/test/index/store/collection_test.dart b/pkg/analyzer/test/index/store/collection_test.dart
similarity index 94%
rename from pkg/analysis_server/test/index/store/collection_test.dart
rename to pkg/analyzer/test/index/store/collection_test.dart
index 382510bd81b0eaa041ae9fc7be9e20177ffabfef..c384515d801c9f29f6f7ff1087a0090f99efb15f 100644
--- a/pkg/analysis_server/test/index/store/collection_test.dart
+++ b/pkg/analyzer/test/index/store/collection_test.dart
@@ -2,9 +2,9 @@
 // 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.collection;
+library test.engine.src.index.store.collection;
 
-import 'package:analysis_server/src/index/store/collection.dart';
+import 'package:analyzer/src/index/store/collection.dart';
 import 'package:unittest/unittest.dart';
 
 import '../../reflective_tests.dart';