// Copyright 2015 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_PLAYER_OBSERVER_H_ #define CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_PLAYER_OBSERVER_H_ #include <optional> #include "base/functional/callback.h" #include "base/time/time.h" namespace media { enum class MediaContentType; } namespace media_session { struct MediaPosition; } // namespace media_session namespace content { class RenderFrameHost; class MediaSessionPlayerObserver { … }; } // namespace content #endif // CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_PLAYER_OBSERVER_H_