Move index/search to services.

pkg/analysis_services/lib/search/search_engine.dart

 // Copyright (c) 2014, 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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.search_engine;
 
 import 'dart:async';
@@ skipping 399 matching lines @@
     buffer.write(", element=");
     buffer.write(element.displayName);
     buffer.write(", range=");
     buffer.write(sourceRange);
     buffer.write(", qualified=");
     buffer.write(qualified);
     buffer.write(")");
     return buffer.toString();
   }
 }