Resynthesize factory constructors from Kernel.

pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart

Index: pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
diff --git a/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart b/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
index 4c14a27f500526fbb6a93ed148fbec4b41a97f22..a891823efe0750693d67c3e511fe3b6d6010b2af 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
@@ -140,11 +140,6 @@ class ResynthesizeKernelStrongTest extends ResynthesizeTest {
   }
 
   @failingTest
-  test_class_constructor_factory() async {
-    await super.test_class_constructor_factory();
-  }
-
-  @failingTest
   test_class_constructor_field_formal_dynamic_dynamic() async {
     await super.test_class_constructor_field_formal_dynamic_dynamic();
   }