clients/scaler: migrate to wp_viewporter

Use wp_viewporter instead of wl_scaler and rename things accordingly.

Since interface versions were reset, there is no need to check the
interface version anymore, and the wl_scaler.set request disappeared.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
diff --git a/Makefile.am b/Makefile.am
index 67c8f4b..419438e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -569,6 +569,8 @@
 	protocol/text-cursor-position-client-protocol.h	\
 	protocol/scaler-protocol.c			\
 	protocol/scaler-client-protocol.h		\
+	protocol/viewporter-protocol.c			\
+	protocol/viewporter-client-protocol.h		\
 	protocol/xdg-shell-unstable-v5-protocol.c			\
 	protocol/xdg-shell-unstable-v5-client-protocol.h		\
 	protocol/ivi-application-protocol.c		\
@@ -774,6 +776,8 @@
 	protocol/weston-desktop-shell-protocol.c			\
 	protocol/scaler-client-protocol.h		\
 	protocol/scaler-protocol.c			\
+	protocol/viewporter-client-protocol.h		\
+	protocol/viewporter-protocol.c			\
 	protocol/presentation-time-protocol.c				\
 	protocol/presentation-time-client-protocol.h			\
 	protocol/fullscreen-shell-unstable-v1-protocol.c		\