dart2js cps: 'is'-check directly against type variables.

tests/co19/co19-dart2js.status

Index: tests/co19/co19-dart2js.status
diff --git a/tests/co19/co19-dart2js.status b/tests/co19/co19-dart2js.status
index 031698ccec736a98b46d690cd9a4b6a3f28b9c6f..61bf010cea2e58b1f10fcd0e79587a663766512e 100644
--- a/tests/co19/co19-dart2js.status
+++ b/tests/co19/co19-dart2js.status
@@ -9614,7 +9614,6 @@ WebPlatformTest/webstorage/storage_local_setitem_t01: RuntimeError # Please tria
 WebPlatformTest/webstorage/storage_session_setitem_t01: RuntimeError # Please triage this failure
 
 [ $compiler == dart2js && $cps_ir ]
-Language/03_Overview/1_Scoping_A01_t34: Crash # Instance of 'TypeOperator': type check unimplemented for T.
 Language/03_Overview/1_Scoping_A01_t39: Crash # Instance of 'TypeOperator': type check unimplemented for f.
 Language/03_Overview/1_Scoping_A02_t19: Crash # (switch (1){case 1:var x;break;case 2:var x;break;}): Unhandled node
 Language/03_Overview/2_Privacy_A01_t06: Crash # Instance of 'TypeOperator': type check unimplemented for _inaccessibleFuncType.
@@ -9637,7 +9636,6 @@ Language/07_Classes/6_Constructors/2_Factories_A09_t03: Crash # Please triage th
 Language/07_Classes/6_Constructors/2_Factories_A09_t04: Crash # Please triage this failure.
 Language/10_Generics/09_Generics_A04_t03: Crash # Instance of 'TypeOperator': type check unimplemented for S.
 Language/10_Generics/10_Generics_A05_t01: Crash # Instance of 'TypeOperator': type check unimplemented for T.
-Language/10_Generics/10_Generics_A05_t03: Crash # Instance of 'TypeOperator': type check unimplemented for T.
 Language/12_Expressions/12_Instance_Creation/1_New_A06_t07: RuntimeError # Please triage this failure.
 Language/12_Expressions/12_Instance_Creation/1_New_A06_t08: Crash # Please triage this failure.
 Language/12_Expressions/12_Instance_Creation/1_New_A06_t09: RuntimeError # Please triage this failure.
@@ -9754,7 +9752,6 @@ Language/15_Types/3_Type_Declarations/1_Typedef_A07_t05: Crash # Instance of 'Ty
 Language/15_Types/3_Type_Declarations/1_Typedef_A07_t06: Crash # Instance of 'TypeOperator': type check unimplemented for f.
 Language/15_Types/3_Type_Declarations/1_Typedef_A07_t07: Crash # Instance of 'TypeOperator': type check unimplemented for f.
 Language/15_Types/4_Interface_Types_A05_t04: Crash # Please triage this failure.
-Language/15_Types/4_Interface_Types_A08_t01: Crash # Instance of 'TypeOperator': type check unimplemented for S.
 Language/15_Types/4_Interface_Types_A10_t04: Crash # Please triage this failure.
 Language/15_Types/4_Interface_Types_A10_t06: Crash # Please triage this failure.
 Language/15_Types/4_Interface_Types_A10_t07: Crash # Please triage this failure.
@@ -9797,8 +9794,6 @@ Language/15_Types/5_Function_Types_A03_t11: Crash # Instance of 'TypeOperator':
 Language/15_Types/5_Function_Types_A03_t12: Crash # Instance of 'TypeOperator': type check unimplemented for classesFunc.
 Language/15_Types/5_Function_Types_A03_t13: Crash # Instance of 'TypeOperator': type check unimplemented for t1.
 Language/15_Types/5_Function_Types_A06_t01: Crash # Instance of 'TypeOperator': type check unimplemented for f.
-Language/15_Types/6_Type_dynamic_A02_t01: Crash # Instance of 'TypeOperator': type check unimplemented for S.
-Language/15_Types/8_Parameterized_Types_A03_t06: Crash # Instance of 'TypeOperator': type check unimplemented for T1.
 LayoutTests/fast/backgrounds/multiple-backgrounds-computed-style_t01: Crash #  Unhandled node
 LayoutTests/fast/canvas/webgl/compressed-tex-image_t01: Crash # Please triage this failure.
 LayoutTests/fast/canvas/webgl/framebuffer-object-attachment_t01: Crash # Please triage this failure.