[Sheriff] Revert "Templatise type representation" and "Fix Mac warnings".

src/stub-cache.cc

Index: src/stub-cache.cc
diff --git a/src/stub-cache.cc b/src/stub-cache.cc
index fc0538ab5ba106cf5c88be95a8cca071b893db86..e92d119590260068681204b04dae135fb7f7c41e 100644
--- a/src/stub-cache.cc
+++ b/src/stub-cache.cc
@@ -651,7 +651,7 @@ Handle<Code> StubCache::ComputeLoadElementPolymorphic(
 
   TypeHandleList types(receiver_maps->length());
   for (int i = 0; i < receiver_maps->length(); i++) {
-    types.Add(Type::Class(receiver_maps->at(i), isolate()));
+    types.Add(handle(Type::Class(receiver_maps->at(i)), isolate()));
   }
   CodeHandleList handlers(receiver_maps->length());
   KeyedLoadStubCompiler compiler(isolate_);