Deprecate ToSourceVisitor

pkg/analyzer/test/src/dart/ast/utilities_test.dart

Index: pkg/analyzer/test/src/dart/ast/utilities_test.dart
diff --git a/pkg/analyzer/test/src/dart/ast/utilities_test.dart b/pkg/analyzer/test/src/dart/ast/utilities_test.dart
index 7b4d93a7d9567be514fd84ccf6f2f999e8f2bc01..3d4364f62e00a61c76d697835613f6ba7f18d18b 100644
--- a/pkg/analyzer/test/src/dart/ast/utilities_test.dart
+++ b/pkg/analyzer/test/src/dart/ast/utilities_test.dart
@@ -28,6 +28,7 @@ main() {
     defineReflectiveTests(NodeLocatorTest);
     defineReflectiveTests(NodeLocator2Test);
     defineReflectiveTests(ResolutionCopierTest);
+    // ignore: deprecated_member_use
     defineReflectiveTests(ToSourceVisitorTest);
     defineReflectiveTests(ToSourceVisitor2Test);
   });
@@ -3344,6 +3345,7 @@ class ToSourceVisitor2Test extends EngineTestCase {
   }
 }
 
+@deprecated
 @reflectiveTest
 class ToSourceVisitorTest extends EngineTestCase {
   void test_visitAdjacentStrings() {