Object managed by unique_ptr and run in only one MessageLoop

delete_this.cpp

// Public method.
void Object::DeleteThis()
{
  // From now on, all methods will act like NOP.
  m_deleted = true;
  // Post a new task to run DoDeleteThis().
  // We cannot delete |this| right now because |this| may be in m_messageLoop.
  m_messageLoop->PostTask(...);
}

// Public method.
bool Object::IsDeleted() const
{
  return m_deleted;
}

// Private method.
// Only be called from DeleteThis().
void Object::DoDeleteThis()
{
  // It's safe to delete |this| now.
  delete this;
}

// All methods should check m_deleted at first.
void Object::Foo()
{
  if (m_deleted)
    return;
  // Do the things.
  ...
}