Move Index and IndexStore implementations into Engine.

pkg/analysis_server/test/typed_mocks.dart

Index: pkg/analysis_server/test/typed_mocks.dart
diff --git a/pkg/analysis_server/test/index/store/typed_mocks.dart b/pkg/analysis_server/test/typed_mocks.dart
similarity index 96%
copy from pkg/analysis_server/test/index/store/typed_mocks.dart
copy to pkg/analysis_server/test/typed_mocks.dart
index 25303042eb5b30d7bd92216cfb70ea703d32986d..fdabd873f3bfb0a4ff24d98261a83cef1be2770f 100644
--- a/pkg/analysis_server/test/index/store/typed_mocks.dart
+++ b/pkg/analysis_server/test/typed_mocks.dart
@@ -2,14 +2,14 @@
 // 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.typed_mocks;
+library test.engine.src.index.store.typed_mocks;
 
-import 'package:analysis_server/src/index/store/codec.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/index.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:typed_mock/typed_mock.dart';
+import 'package:analyzer/src/index/store/codec.dart';
+import 'package:analyzer/index/index.dart';
 
 
 class MockAnalysisContext extends TypedMock implements AnalysisContext {