Issue 27903. Use shared logic for computing new method location.

pkg/analysis_server/lib/src/services/correction/util.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.correction.util;
 
 import 'dart:math';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart'
     show SourceChange, SourceEdit;
@@ skipping 1299 matching lines @@
   ClassMemberLocation prepareNewGetterLocation(
       ClassDeclaration classDeclaration) {
     return prepareNewClassMemberLocation(
         classDeclaration,
         (member) =>
             member is FieldDeclaration ||
             member is ConstructorDeclaration ||
             member is MethodDeclaration && member.isGetter);
   }
 
+  ClassMemberLocation prepareNewMethodLocation(
+      ClassDeclaration classDeclaration) {
+    return prepareNewClassMemberLocation(
+        classDeclaration,
+        (member) =>
+            member is FieldDeclaration ||
+            member is ConstructorDeclaration ||
+            member is MethodDeclaration);
+  }
+
   /**
    * Returns the source with indentation changed from [oldIndent] to
    * [newIndent], keeping indentation of lines relative to each other.
    */
   String replaceSourceIndent(
       String source, String oldIndent, String newIndent) {
     // prepare STRING token ranges
     List<SourceRange> lineRanges = [];
     {
       List<Token> tokens = TokenUtils.getTokens(source);
@@ skipping 321 matching lines @@
       _InvertedCondition expr, int newOperatorPrecedence) {
     if (expr._precedence < newOperatorPrecedence) {
       return "(${expr._source})";
     }
     return expr._source;
   }
 
   static _InvertedCondition _simple(String source) =>
       new _InvertedCondition(2147483647, source);
 }