Replace using '_commentBeforeFunction' with visitXyzInScope().

pkg/analyzer/test/generated/test_support.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 analyzer.test.generated.test_support;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
-import 'package:analyzer/src/generated/ast.dart' show AstNode, NodeLocator;
+import 'package:analyzer/src/generated/ast.dart'
+    show AstNode, NodeLocator, SimpleIdentifier;
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:plugin/manager.dart';
 import 'package:plugin/plugin.dart';
 import 'package:unittest/unittest.dart';
 
 import 'resolver_test.dart';
@@ skipping 104 matching lines @@
    */
   static AstNode findNode(
       AstNode root, String code, String prefix, Predicate<AstNode> predicate) {
     int offset = code.indexOf(prefix);
     if (offset == -1) {
       throw new IllegalArgumentException("Not found '$prefix'.");
     }
     AstNode node = new NodeLocator(offset).searchWithin(root);
     return node.getAncestor(predicate);
   }
+
+  /**
+   * Find the [SimpleIdentifier] with at offset of the "prefix".
+   */
+  static SimpleIdentifier findSimpleIdentifier(
+      AstNode root, String code, String prefix) {
+    int offset = code.indexOf(prefix);
+    if (offset == -1) {
+      throw new IllegalArgumentException("Not found '$prefix'.");
+    }
+    return new NodeLocator(offset).searchWithin(root);
+  }
 }
 
 /**
  * Instances of the class `GatheringErrorListener` implement an error listener that collects
  * all of the errors passed to it for later examination.
  */
 class GatheringErrorListener implements AnalysisErrorListener {
   /**
    * An empty array of errors used when no errors are expected.
    */
@@ skipping 507 matching lines @@
     if (other is TestSource) {
       return other.uri == uri;
     }
     return false;
   }
 
   Uri resolveRelativeUri(Uri uri) {
     return this.uri.resolveUri(uri);
   }
 }