Issue 21655. Don't import self when add type declaration.

pkg/analysis_server/test/services/correction/assist_test.dart

Index: pkg/analysis_server/test/services/correction/assist_test.dart
diff --git a/pkg/analysis_server/test/services/correction/assist_test.dart b/pkg/analysis_server/test/services/correction/assist_test.dart
index c344e0b7fdfb7257420f5e847f60d857960cfe0a..31fcc4f352fb7e8f6fb5185b7e52e2a165cebe83 100644
--- a/pkg/analysis_server/test/services/correction/assist_test.dart
+++ b/pkg/analysis_server/test/services/correction/assist_test.dart
@@ -362,6 +362,23 @@ main() {
 ''');
   }
 
+  void test_addTypeAnnotation_local_OK_localType() {
+    _indexTestUnit('''
+class C {}
+C f() => null;
+main() {
+  var x = f();
+}
+''');
+    assertHasAssistAt('x =', AssistKind.ADD_TYPE_ANNOTATION, '''
+class C {}
+C f() => null;
+main() {
+  C x = f();
+}
+''');
+  }
+
   void test_addTypeAnnotation_local_OK_onInitializer() {
     _indexTestUnit('''
 main() {