Restructure the public API for server

pkg/analysis_server/lib/src/services/index/store/split_store.dart

Index: pkg/analysis_server/lib/src/services/index/store/split_store.dart
diff --git a/pkg/analysis_server/lib/src/services/index/store/split_store.dart b/pkg/analysis_server/lib/src/services/index/store/split_store.dart
index 57b173487189abdca5fbb0922efe8110279adcf7..eed774fd90d287e2e26c0539be416c4d9c72c421 100644
--- a/pkg/analysis_server/lib/src/services/index/store/split_store.dart
+++ b/pkg/analysis_server/lib/src/services/index/store/split_store.dart
@@ -8,19 +8,19 @@ import 'dart:async';
 import 'dart:collection';
 import 'dart:typed_data';
 
-import 'package:analysis_server/analysis/index_core.dart';
+import 'package:analysis_server/plugin/index/index_core.dart';
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index/index_store.dart';
 import 'package:analysis_server/src/services/index/indexable_element.dart';
 import 'package:analysis_server/src/services/index/store/codec.dart';
 import 'package:analysis_server/src/services/index/store/collection.dart';
+import 'package:analyzer/src/generated/ast.dart' show CompilationUnit;
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_general.dart';
-import 'package:analyzer/src/generated/ast.dart' show CompilationUnit;
 
 /**
  * The implementation of [IndexObjectManager] for indexing