Issue 6283. Support type literals as expressions.

tests/language/language.status

Index: tests/language/language.status
diff --git a/tests/language/language.status b/tests/language/language.status
index ee3775a6ecf23034c978eb1ed4045bf9ca5a555f..9050d5a9ccf6d94b879fa2f3e2e28c9ce99115c6 100644
--- a/tests/language/language.status
+++ b/tests/language/language.status
@@ -138,7 +138,6 @@ disable_privacy_test: Fail # Issue 1882: Needs --disable_privacy support.
 factory5_test/00: Fail # issue 3079
 field_method4_negative_test: Fail  # Runtime only test, rewrite as multitest
 
-first_class_types_literals_test: Fail # issue 6283
 getter_no_setter_test/01: Fail # Fails to detect compile-time error.
 getter_no_setter2_test/01: Fail # Fails to detect compile-time error.
 instance_call_wrong_argument_count_negative_test: Fail # Runtime only test, rewrite as multitest
@@ -336,6 +335,9 @@ top_level_prefixed_declaration_test: Fail, OK
 typed_message_test: Fail, OK
 
 
+# test issue 6818
+type_variable_identifier_expression_negative_test: Fail, OK
+
 
 #
 # Add new dartc annotations above in alphabetical order