Fix a crash in MediaSessionServiceImpl due to life time issue

content/browser/media/session/media_session_service_impl.h

Index: content/browser/media/session/media_session_service_impl.h
diff --git a/content/browser/media/session/media_session_service_impl.h b/content/browser/media/session/media_session_service_impl.h
index 5f1348630b80f6b78a1394fcdc92777331d2944f..03113849082c18559df69e4003463366116d60ec 100644
--- a/content/browser/media/session/media_session_service_impl.h
+++ b/content/browser/media/session/media_session_service_impl.h
@@ -26,7 +26,7 @@ class CONTENT_EXPORT MediaSessionServiceImpl
   static void Create(RenderFrameHost* render_frame_host,
                      blink::mojom::MediaSessionServiceRequest request);
   const blink::mojom::MediaSessionClientPtr& GetClient() { return client_; }
-  RenderFrameHost* GetRenderFrameHost() { return render_frame_host_; }
+  RenderFrameHost* GetRenderFrameHost();
 
   blink::mojom::MediaSessionPlaybackState playback_state() const {
     return playback_state_;
@@ -53,7 +53,8 @@ class CONTENT_EXPORT MediaSessionServiceImpl
 
   void Bind(blink::mojom::MediaSessionServiceRequest request);
 
-  RenderFrameHost* render_frame_host_;
+  const int render_frame_process_id_;
+  const int render_frame_routing_id_;
 
   // RAII binding of |this| to an MediaSessionService interface request.
   // The binding is removed when binding_ is cleared or goes out of scope.