Privatize StrongBinding lifetime management

media/mojo/services/mojo_renderer_service.h

Index: media/mojo/services/mojo_renderer_service.h
diff --git a/media/mojo/services/mojo_renderer_service.h b/media/mojo/services/mojo_renderer_service.h
index a99d61da1ccf1d135b2bb6d3544bd29ccd42c905..68e0dee5c3afc82de3b51f416056efed4df6b43c 100644
--- a/media/mojo/services/mojo_renderer_service.h
+++ b/media/mojo/services/mojo_renderer_service.h
@@ -20,7 +20,6 @@
 #include "media/base/renderer_client.h"
 #include "media/mojo/interfaces/renderer.mojom.h"
 #include "media/mojo/services/media_mojo_export.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace media {
 
@@ -43,8 +42,7 @@ class MEDIA_MOJO_EXPORT MojoRendererService
       base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context,
       scoped_refptr<AudioRendererSink> audio_sink,
       std::unique_ptr<VideoRendererSink> video_sink,
-      std::unique_ptr<media::Renderer> renderer,
-      mojo::InterfaceRequest<mojom::Renderer> request);
+      std::unique_ptr<media::Renderer> renderer);
   ~MojoRendererService() final;
 
   // mojom::Renderer implementation.
@@ -102,8 +100,6 @@ class MEDIA_MOJO_EXPORT MojoRendererService
                      const base::Callback<void(bool)>& callback,
                      bool success);
 
-  mojo::StrongBinding<mojom::Renderer> binding_;
-
   base::WeakPtr<MojoCdmServiceContext> mojo_cdm_service_context_;
 
   State state_;