Replace using '_commentBeforeFunction' with visitXyzInScope().

pkg/analyzer/test/generated/test_support.dart

Index: pkg/analyzer/test/generated/test_support.dart
diff --git a/pkg/analyzer/test/generated/test_support.dart b/pkg/analyzer/test/generated/test_support.dart
index eef9817dcc944334e255939d142804b93a9b9c1a..9db703b066313683ff8c8536c123beb3b3c367ef 100644
--- a/pkg/analyzer/test/generated/test_support.dart
+++ b/pkg/analyzer/test/generated/test_support.dart
@@ -8,7 +8,8 @@ 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';
@@ -133,6 +134,18 @@ class EngineTestCase {
     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);
+  }
 }
 
 /**