| // Copyright 2014 The Chromium Authors | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| #import "ios/web/public/web_state_observer.h" | |
| #import <ostream> | |
| #import "base/check.h" | |
| namespace web { | |
| WebStateObserver::WebStateObserver() = default; | |
| WebStateObserver::~WebStateObserver() { | |
| CHECK(!IsInObserverList()) << "WebStateObserver must be removed from " | |
| "WebState observer list before destruction."; | |
| } | |
| } // namespace web |