Split BindStateBase ctor for non-cancellable Bind

base/callback_internal.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file contains utility functions and classes that help the
 // implementation, and management of the Callback objects.
 
 #ifndef BASE_CALLBACK_INTERNAL_H_
 #define BASE_CALLBACK_INTERNAL_H_
 
@@ skipping 18 matching lines @@
 // RefCountedThreadSafe since it requires the destructor to be a virtual method.
 // Creating a vtable for every BindState template instantiation results in a lot
 // of bloat. Its only task is to call the destructor which can be done with a
 // function pointer.
 class BASE_EXPORT BindStateBase {
  public:
   using InvokeFuncStorage = void(*)();
 
  protected:
   BindStateBase(InvokeFuncStorage polymorphic_invoke,
+                void (*destructor)(BindStateBase*));
+  BindStateBase(InvokeFuncStorage polymorphic_invoke,
                 void (*destructor)(BindStateBase*),
                 bool (*is_cancelled)(const BindStateBase*));
   ~BindStateBase() = default;
 
  private:
   friend class scoped_refptr<BindStateBase>;
   template <CopyMode copy_mode>
   friend class CallbackBase;
 
   bool IsCancelled() const {
@@ skipping 79 matching lines @@
   ~CallbackBase() {}
 };
 
 extern template class CallbackBase<CopyMode::MoveOnly>;
 extern template class CallbackBase<CopyMode::Copyable>;
 
 }  // namespace internal
 }  // namespace base
 
 #endif  // BASE_CALLBACK_INTERNAL_H_