Remove custom left overs from object grouping

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/ScriptWrappable.h"
 #include "bindings/core/v8/TraceWrapperMember.h"
 #include "core/dom/ContextLifecycleObserver.h"
@@ skipping 48 matching lines @@
     ActionDisabled,
   };
 
   explicit MediaSession(ExecutionContext*);
 
   void notifyActionChange(const String& action, ActionChangeType);
 
   // blink::mojom::blink::MediaSessionClient implementation.
   void DidReceiveAction(blink::mojom::blink::MediaSessionAction) override;
 
-  void setV8ReferencesForHandlers(v8::Isolate*,
-                                  const v8::Persistent<v8::Object>& wrapper);
-
   // Returns null when the ExecutionContext is not document.
   mojom::blink::MediaSessionService* getService();
 
   mojom::blink::MediaSessionPlaybackState m_playbackState;
   Member<MediaMetadata> m_metadata;
   HeapHashMap<String, TraceWrapperMember<MediaSessionActionHandler>>
       m_actionHandlers;
   mojom::blink::MediaSessionServicePtr m_service;
   mojo::Binding<blink::mojom::blink::MediaSessionClient> m_clientBinding;
 };
 
 }  // namespace blink
 
 #endif  // MediaSession_h