Unassociating MediaSession from media players (in blink & content)

third_party/WebKit/Source/modules/mediasession/HTMLMediaElementMediaSession.h

-// Copyright 2015 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.
-
-#ifndef HTMLMediaElementMediaSession_h
-#define HTMLMediaElementMediaSession_h
-
-#include "core/html/HTMLMediaElement.h"
-#include "modules/ModulesExport.h"
-#include "modules/mediasession/MediaSession.h"
-#include "platform/Supplementable.h"
-#include "platform/heap/Handle.h"
-
-namespace blink {
-
-// A supplement to HTMLMediaElement responsible for the integration of
-// MediaSession with HTMLMediaElement.
-class MODULES_EXPORT HTMLMediaElementMediaSession final : public GarbageCollected<HTMLMediaElementMediaSession>, public Supplement<HTMLMediaElement> {
-    USING_GARBAGE_COLLECTED_MIXIN(HTMLMediaElementMediaSession);
-public:
-    static MediaSession* session(HTMLMediaElement&);
-    static void setSession(HTMLMediaElement&, MediaSession*, ExceptionState&);
-
-    DECLARE_VIRTUAL_TRACE();
-
-private:
-    static HTMLMediaElementMediaSession& from(HTMLMediaElement&);
-    static HTMLMediaElementMediaSession* fromIfExists(HTMLMediaElement&);
-    static const char* supplementName();
-
-    Member<MediaSession> m_session;
-};
-
-} // namespace blink
-
-#endif // HTMLMediaElementMediaSession_h