Migrating MediaSession messages to mojo

third_party/WebKit/Source/modules/mediasession/MediaSession.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 MediaSession_h
 #define MediaSession_h
 
-#include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "modules/ModulesExport.h"
 #include "platform/heap/Handle.h"
-#include "public/platform/modules/mediasession/WebMediaSession.h"
+#include "public/platform/modules/mediasession/media_session.mojom-blink.h"
 #include <memory>
 
 namespace blink {
 
 class MediaMetadata;
 class ScriptState;
 
 class MODULES_EXPORT MediaSession final
     : public GarbageCollectedFinalized<MediaSession>,
       public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
-  static MediaSession* create(ExecutionContext*, ExceptionState&);
+  static MediaSession* create();
 
-  WebMediaSession* getWebMediaSession() { return m_webMediaSession.get(); }
-
-  ScriptPromise activate(ScriptState*);
-  ScriptPromise deactivate(ScriptState*);
-
-  void setMetadata(MediaMetadata*);
-  MediaMetadata* metadata() const;
+  void setMetadata(ScriptState*, MediaMetadata*);
+  MediaMetadata* metadata(ScriptState*) const;
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   friend class MediaSessionTest;
 
-  explicit MediaSession(std::unique_ptr<WebMediaSession>);
+  MediaSession();
 
-  std::unique_ptr<WebMediaSession> m_webMediaSession;
+  // Returns null when the ExecutionContext is not document.
+  mojom::blink::MediaSessionService* getService(ScriptState*);
+
   Member<MediaMetadata> m_metadata;
+  mojom::blink::MediaSessionServicePtr m_service;
 };
 
 }  // namespace blink
 
 #endif  // MediaSession_h