Add support for converted closures with explicit contexts to VM

pkg/kernel/testcases/closures/static_tear_off.dart.expect

Index: pkg/kernel/testcases/closures/static_tear_off.dart.expect
diff --git a/pkg/kernel/testcases/closures/static_tear_off.dart.expect b/pkg/kernel/testcases/closures/static_tear_off.dart.expect
index 5426f092ec36b0dd951b415b5e909168540342a6..d7caf82d3d8a3701a690aebd537639a8cdfe4ae7 100644
--- a/pkg/kernel/testcases/closures/static_tear_off.dart.expect
+++ b/pkg/kernel/testcases/closures/static_tear_off.dart.expect
@@ -49,16 +49,8 @@ static method test_1(core::Function f, core::bool hasDefault) → dynamic {
   }
 }
 static method main(dynamic arguments) → dynamic {
-  self::test_1_1(MakeClosure<(dynamic, [dynamic]) → dynamic>(self::closure#f_1_1_no_default, null), false);
-  self::test_1_1(MakeClosure<(dynamic, [dynamic]) → dynamic>(self::closure#f_1_1_default, null), true);
-  self::test_1_b(MakeClosure<(dynamic, {b: dynamic}) → dynamic>(self::closure#f_1_b_no_default, null), false);
-  self::test_1_b(MakeClosure<(dynamic, {b: dynamic}) → dynamic>(self::closure#f_1_b_default, null), true);
+  self::test_1_1(self::f_1_1_no_default, false);
+  self::test_1_1(self::f_1_1_default, true);
+  self::test_1_b(self::f_1_b_no_default, false);
+  self::test_1_b(self::f_1_b_default, true);
 }
-static method closure#f_1_1_no_default(Vector #contextParameter, dynamic a, [dynamic b = null]) → dynamic
-  return self::f_1_1_no_default(a, b);
-static method closure#f_1_1_default(Vector #contextParameter, dynamic a, [dynamic b = 2]) → dynamic
-  return self::f_1_1_default(a, b);
-static method closure#f_1_b_no_default(Vector #contextParameter, dynamic a, {dynamic b = null}) → dynamic
-  return self::f_1_b_no_default(a, b: b);
-static method closure#f_1_b_default(Vector #contextParameter, dynamic a, {dynamic b = 2}) → dynamic
-  return self::f_1_b_default(a, b: b);