Make change builder provisional API

pkg/analysis_server/lib/src/services/completion/inherited_contributor.dart

 // Copyright (c) 2015, 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.
 
 library services.completion.computer.dart.invocation;
 
-import 'package:analysis_server/plugin/edit/utilities/change_builder_dart.dart';
 import 'package:analysis_server/src/protocol_server.dart'
     show CompletionSuggestion, CompletionSuggestionKind, SourceChange;
 import 'package:analysis_server/src/protocol_server.dart' as protocol
     hide CompletionSuggestion, CompletionSuggestionKind;
 import 'package:analysis_server/src/provisional/completion/completion_dart.dart';
+import 'package:analysis_server/src/provisional/edit/utilities/change_builder_dart.dart';
 import 'package:analysis_server/src/services/completion/dart_completion_manager.dart'
     show DART_RELEVANCE_HIGH;
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 /**
  * A completion contributor used to suggest replacing partial identifiers inside
@@ skipping 128 matching lines @@
     for (String memberName in memberNames) {
       CompletionSuggestion suggestion =
           _buildSuggestion(request.source, identifier, map.get(memberName));
       if (suggestion != null) {
         suggestions.add(suggestion);
       }
     }
     return suggestions;
   }
 }