Pass a second type argument vector to all type instantiation calls in the VM.

runtime/vm/object_test.cc

Index: runtime/vm/object_test.cc
diff --git a/runtime/vm/object_test.cc b/runtime/vm/object_test.cc
index d1e851b1181addeef58ec2b750575f3c071af983..5a61bba27723c72a407941df3a2de750166c6583 100644
--- a/runtime/vm/object_test.cc
+++ b/runtime/vm/object_test.cc
@@ -3098,17 +3098,20 @@ ISOLATE_UNIT_TEST_CASE(SubtypeTestCache) {
   const Object& class_id_or_fun = Object::Handle(Smi::New(empty_class.id()));
   const TypeArguments& targ_0 = TypeArguments::Handle(TypeArguments::New(2));
   const TypeArguments& targ_1 = TypeArguments::Handle(TypeArguments::New(3));
-  cache.AddCheck(class_id_or_fun, targ_0, targ_1, Bool::True());
+  const TypeArguments& targ_2 = TypeArguments::Handle(TypeArguments::New(4));
+  cache.AddCheck(class_id_or_fun, targ_0, targ_1, targ_2, Bool::True());
   EXPECT_EQ(1, cache.NumberOfChecks());
   Object& test_class_id_or_fun = Object::Handle();
   TypeArguments& test_targ_0 = TypeArguments::Handle();
   TypeArguments& test_targ_1 = TypeArguments::Handle();
+  TypeArguments& test_targ_2 = TypeArguments::Handle();
   Bool& test_result = Bool::Handle();
   cache.GetCheck(0, &test_class_id_or_fun, &test_targ_0, &test_targ_1,
-                 &test_result);
+                 &test_targ_2, &test_result);
   EXPECT_EQ(class_id_or_fun.raw(), test_class_id_or_fun.raw());
   EXPECT_EQ(targ_0.raw(), test_targ_0.raw());
   EXPECT_EQ(targ_1.raw(), test_targ_1.raw());
+  EXPECT_EQ(targ_2.raw(), test_targ_2.raw());
   EXPECT_EQ(Bool::True().raw(), test_result.raw());
 }