Change deprecated semantics of function template signatures.

src/stub-cache.cc

Index: src/stub-cache.cc
diff --git a/src/stub-cache.cc b/src/stub-cache.cc
index 1f708b3ca63c94f6d7bf49e9c10d66e23f1de8ca..bfed6bbac7f5db4fa5f372b1c3d7554886c1b2ae 100644
--- a/src/stub-cache.cc
+++ b/src/stub-cache.cc
@@ -1562,6 +1562,7 @@ int CallOptimization::GetPrototypeDepthOfExpectedType(
   while (!object.is_identical_to(holder)) {
     if (object->IsInstanceOf(*expected_receiver_type_)) return depth;
     object = Handle<JSObject>(JSObject::cast(object->GetPrototype()));
+    if (!object->map()->is_hidden_prototype()) return kInvalidProtoDepth;
     ++depth;
   }
   if (holder->IsInstanceOf(*expected_receiver_type_)) return depth;