Clean up instanceof codegen in compiler.

Change-Id: I0179a0746bc5aaef02129169b6a6b1bbbe30dc7e
diff --git a/src/object_test.cc b/src/object_test.cc
index 79688a3..1451929 100644
--- a/src/object_test.cc
+++ b/src/object_test.cc
@@ -333,10 +333,10 @@
   ASSERT_TRUE(x != NULL);
   ASSERT_TRUE(y != NULL);
 
-  EXPECT_EQ(1U, Object::InstanceOfFromCode(x, X));
-  EXPECT_EQ(0U, Object::InstanceOfFromCode(x, Y));
-  EXPECT_EQ(1U, Object::InstanceOfFromCode(y, X));
-  EXPECT_EQ(1U, Object::InstanceOfFromCode(y, Y));
+  EXPECT_EQ(1U, Class::IsAssignableFromCode(X, x->GetClass()));
+  EXPECT_EQ(0U, Class::IsAssignableFromCode(Y, x->GetClass()));
+  EXPECT_EQ(1U, Class::IsAssignableFromCode(X, y->GetClass()));
+  EXPECT_EQ(1U, Class::IsAssignableFromCode(Y, y->GetClass()));
 
   EXPECT_TRUE(x->InstanceOf(X));
   EXPECT_FALSE(x->InstanceOf(Y));