Push add*Edit helpers into SourceChange.

pkg/analysis_server/lib/src/services/refactoring/inline_local.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.
 
 library services.src.refactoring.inline_local;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart' hide Element;
 import 'package:analysis_server/src/services/correction/status.dart';
@@ skipping 113 matching lines @@
   }
 
   @override
   Future<SourceChange> createChange() {
     SourceChange change = new SourceChange(refactoringName);
     // remove declaration
     {
       Statement declarationStatement =
           _variableNode.getAncestor((node) => node is VariableDeclarationStatement);
       SourceRange range = utils.getLinesRangeStatements([declarationStatement]);
-      addElementSourceChange(
-          change,
-          unitElement,
-          new SourceEdit.range(range, ''));
+      change.addElementEdit(unitElement, new SourceEdit.range(range, ''));
     }
     // prepare initializer
     Expression initializer = _variableNode.initializer;
     String initializerSource = utils.getNodeText(initializer);
     int initializerPrecedence = getExpressionPrecedence(initializer);
     // replace references
     for (SearchMatch reference in _references) {
       SourceRange range = reference.sourceRange;
       String sourceForReference =
           _getSourceForReference(range, initializerSource, initializerPrecedence);
-      addElementSourceChange(
-          change,
+      change.addElementEdit(
           unitElement,
           new SourceEdit.range(range, sourceForReference));
     }
     // done
     return new Future.value(change);
   }
 
   @override
   bool requiresPreview() => false;
 
@@ skipping 24 matching lines @@
    */
   bool _isIdentifierStringInterpolation(AstNode parent) {
     if (parent is InterpolationExpression) {
       InterpolationExpression element = parent;
       return element.beginToken.type ==
           TokenType.STRING_INTERPOLATION_IDENTIFIER;
     }
     return false;
   }
 }