// 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.#include "base/callback_internal.h"#include "base/logging.h"namespacebase{namespaceinternal{boolCallbackBase::is_null()const{returnbind_state_.get()==NULL;}voidCallbackBase::Reset(){polymorphic_invoke_=NULL;// NULL the bind_state_ last, since it may be holding the last ref to whatever// object owns us, and we may be deleted after that.bind_state_=NULL;}boolCallbackBase::Equals(constCallbackBase&other)const{returnbind_state_.get()==other.bind_state_.get()&&polymorphic_invoke_==other.polymorphic_invoke_;}CallbackBase::CallbackBase(BindStateBase*bind_state):bind_state_(bind_state),polymorphic_invoke_(NULL){DCHECK(!bind_state_.get()||bind_state_->HasOneRef());}CallbackBase::~CallbackBase(){}}// namespace internal}// namespace base