cps_ir: Handle malformed type arguments and type checks.

tests/compiler/dart2js_extra/dart2js_extra.status

Index: tests/compiler/dart2js_extra/dart2js_extra.status
diff --git a/tests/compiler/dart2js_extra/dart2js_extra.status b/tests/compiler/dart2js_extra/dart2js_extra.status
index 82ed9178bf4a9c6fce5dafbac1447c4c360b7d54..abcdda31c12054a93ed6da9e29dc1c7655db5eda 100644
--- a/tests/compiler/dart2js_extra/dart2js_extra.status
+++ b/tests/compiler/dart2js_extra/dart2js_extra.status
@@ -65,6 +65,7 @@ deferred_fail_and_retry_worker_test: SkipByDesign # Uses eval to simulate failed
 10216a_test: Crash # Instance of 'TypeOperator': type casts not implemented.
 10216b_test: Crash # Instance of 'TypeOperator': type casts not implemented.
 12320_test: Crash #  Unhandled node
+16407_test: Pass # Please triage this failure.
 17094_test: RuntimeError # Please triage this failure.
 21666_test: Crash # Instance of 'TypeOperator': type check unimplemented for fInt.
 22868_test: Crash #  cannot handle async/sync*/async* functions
@@ -124,6 +125,5 @@ switch_test/02: Crash #  Unhandled node
 switch_test/none: Crash # (switch (val){}): Unhandled node
 this_phi_elimination_test: Crash # Instance of 'TypeOperator': type check unimplemented for _Nullary.
 type_constant_switch_test/none: Crash # (switch (v){}): Unhandled node
-typevariable_factory_test: Crash # Instance of 'TypeOperator': type check unimplemented for A<T>.
+typevariable_factory_test: Crash # Please triage this failure.
 while_test: Timeout # Please triage this failure.
-16407_test : Pass