Push add*Edit helpers into SourceChange.

pkg/analysis_server/tool/spec/codegen_dart_protocol.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 codegen.protocol;
 
 import 'dart:convert';
 
 import 'api.dart';
 import 'codegen_tools.dart';
@@ skipping 545 matching lines @@
           writeln('suggestions.add(suggestion);');
         });
         writeln('}');
         return true;
       case 'SourceChange':
         docComment(
             [new dom.Text('Adds [edit] to the [FileEdit] for the given [file].')]);
         writeln('void addEdit(String file, int fileStamp, SourceEdit edit) =>');
         writeln('    _addEditToSourceChange(this, file, fileStamp, edit);');
         writeln();
+        docComment(
+            [new dom.Text('Adds [edit] to the [FileEdit] for the given [source].')]);
+        writeln('void addSourceEdit(engine.AnalysisContext context,');
+        writeln(    'engine.Source source, SourceEdit edit) =>');
+        writeln('    _addSourceEditToSourceChange(this, context, source, edit);');
+        writeln();
+        docComment(
+            [new dom.Text('Adds [edit] to the [FileEdit] for the given [element].')]);
+        writeln('void addElementEdit(engine.Element element, SourceEdit edit) =>');
+        writeln('    _addElementEditToSourceChange(this, element, edit);');
+        writeln();
         docComment([new dom.Text('Adds the given [FileEdit].')]);
         writeln('void addFileEdit(SourceFileEdit edit) {');
         indent(() {
           writeln('edits.add(edit);');
         });
         writeln('}');
         writeln();
         docComment([new dom.Text('Adds the given [LinkedEditGroup].')]);
         writeln('void addLinkedEditGroup(LinkedEditGroup linkedEditGroup) {');
         indent(() {
@@ skipping 727 matching lines @@
   CodegenProtocolVisitor visitor = new CodegenProtocolVisitor(readApi());
   return visitor.collectCode(visitor.visitApi);
 });
 
 /**
  * Translate spec_input.html into protocol_matchers.dart.
  */
 main() {
   target.generate();
 }