Throw NSM on unresolved factory redirection.

pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect

Index: pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect
diff --git a/pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect b/pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect
index d089b8fc8559c10d7a3996b57c49946048293a99..4c0e08325eca220f19923396a68ace92aee8cf08 100644
--- a/pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/issue_000067.dart.outline.expect
@@ -7,7 +7,7 @@ class A extends core::Object {
   constructor •() → void
     ;
   static factory foo() → self::A
-    let final dynamic #t1 = self::C::bar in invalid-expression;
+    let dynamic #redirecting_factory = self::C::bar in invalid-expression;
   method m() → core::int
     ;
 }
@@ -16,7 +16,7 @@ class C extends self::A {
   constructor •() → void
     ;
   static factory bar() → self::C
-    let final dynamic #t2 = self::D::• in invalid-expression;
+    let dynamic #redirecting_factory = self::D::• in invalid-expression;
   method m() → core::int
     ;
 }