3 files changed, 3 insertions, 3 deletions
diff --git a/include/wlr/backend/drm.h b/include/wlr/backend/drm.h
index 5d47647d..3724adfb 100644
--- a/include/wlr/backend/drm.h
+++ b/include/wlr/backend/drm.h
@@ -34,6 +34,4 @@ bool wlr_output_is_drm(struct wlr_output *output);
 typedef struct _drmModeModeInfo drmModeModeInfo;
 bool wlr_drm_connector_add_mode(struct wlr_output *output, const drmModeModeInfo *mode);
 
-struct wlr_session *wlr_drm_backend_get_session(struct wlr_backend *backend);
-
 #endif
diff --git a/include/wlr/backend/interface.h b/include/wlr/backend/interface.h
index f3dee69b..4a6a5cbb 100644
--- a/include/wlr/backend/interface.h
+++ b/include/wlr/backend/interface.h
@@ -10,6 +10,7 @@
 #define WLR_BACKEND_INTERFACE_H
 
 #include <stdbool.h>
+#include <time.h>
 #include <wlr/backend.h>
 #include <wlr/render/egl.h>
 
@@ -17,6 +18,8 @@ struct wlr_backend_impl {
 	bool (*start)(struct wlr_backend *backend);
 	void (*destroy)(struct wlr_backend *backend);
 	struct wlr_renderer *(*get_renderer)(struct wlr_backend *backend);
+	struct wlr_session *(*get_session)(struct wlr_backend *backend);
+	clockid_t (*get_presentation_clock)(struct wlr_backend *backend);
 };
 
 /**
diff --git a/include/wlr/backend/multi.h b/include/wlr/backend/multi.h
index ef908d26..0687f4b6 100644
--- a/include/wlr/backend/multi.h
+++ b/include/wlr/backend/multi.h
@@ -28,7 +28,6 @@ void wlr_multi_backend_remove(struct wlr_backend *multi,
 	struct wlr_backend *backend);
 
 bool wlr_backend_is_multi(struct wlr_backend *backend);
-struct wlr_session *wlr_multi_get_session(struct wlr_backend *base);
 bool wlr_multi_is_empty(struct wlr_backend *backend);
 
 void wlr_multi_for_each_backend(struct wlr_backend *backend,