Move CallbackBase::polymorphic_invoke_ into BindStateBase

base/bind_internal.h

Index: base/bind_internal.h
diff --git a/base/bind_internal.h b/base/bind_internal.h
index 83e000dacdb7b197ecfa26b149ab949e07a295fb..0c7c8abda227de1cb2b29c2ab211106c20a5a8c9 100644
--- a/base/bind_internal.h
+++ b/base/bind_internal.h
@@ -379,8 +379,10 @@ IsNull(const Functor&) {
 template <typename Functor, typename... BoundArgs>
 struct BindState final : BindStateBase {
   template <typename ForwardFunctor, typename... ForwardBoundArgs>
-  explicit BindState(ForwardFunctor&& functor, ForwardBoundArgs&&... bound_args)
-      : BindStateBase(&Destroy),
+  explicit BindState(BindStateBase::InvokeFuncStorage invoke_func,
+                     ForwardFunctor&& functor,
+                     ForwardBoundArgs&&... bound_args)
+      : BindStateBase(invoke_func, &Destroy),
         functor_(std::forward<ForwardFunctor>(functor)),
         bound_args_(std::forward<ForwardBoundArgs>(bound_args)...) {
     DCHECK(!IsNull(functor_));