Implement type arguments in redirecting factories.

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

Index: pkg/front_end/testcases/rasta/issue_000067.dart.direct.expect
diff --git a/pkg/front_end/testcases/rasta/issue_000067.dart.direct.expect b/pkg/front_end/testcases/rasta/issue_000067.dart.direct.expect
index 85a69c19fddd5fc8253cbb2a9d4a7c4cef1d3cc3..b4e945a50ed367e74a06cdba665fba17066e6dc3 100644
--- a/pkg/front_end/testcases/rasta/issue_000067.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/issue_000067.dart.direct.expect
@@ -8,7 +8,7 @@ class A extends core::Object {
   constructor •() → void
     : super core::Object::•() {}
   static factory foo() → self::A
-    let dynamic #redirecting_factory = self::C::bar in invalid-expression;
+    let self::C #redirecting_factory = self::C::bar in invalid-expression;
   method m() → core::int {}
 }
 class C extends self::A {
@@ -16,7 +16,7 @@ class C extends self::A {
   constructor •() → void
     : super self::A::•() {}
   static factory bar() → self::C
-    let dynamic #redirecting_factory = self::D::• in invalid-expression;
+    let self::D #redirecting_factory = self::D::• in invalid-expression;
   method m() → core::int {
     return 1;
   }