shell: Don't use the helper methods in xdg_shell implementations

With most of the code in send_configure_for_surface, the helper
methods don't give us that much benefit, so stop using them. We
can't kill them off, as they're part of the shell interface and
used by the WM.

desktop-shell/shell.c

@@ -157,7 +157,6 @@ struct shell_surface {
 
 	struct weston_output *fullscreen_output;
 	struct weston_output *output;
-	struct weston_output *recommended_output;
 	struct wl_list link;
 
 	const struct weston_shell_client *client;
@@ -2482,16 +2481,6 @@ shell_surface_set_popup(struct wl_client *client,
 	          serial, x, y);
 }
 
-static void
-set_maximized(struct shell_surface *shsurf,
-              struct weston_output *output)
-{
-	shell_surface_set_output(shsurf, output);
-	shsurf->type = SHELL_SURFACE_TOPLEVEL;
-
-	send_configure_for_surface(shsurf);
-}
-
 static void
 unset_maximized(struct shell_surface *shsurf)
 {
@@ -2568,18 +2557,21 @@ shell_surface_set_maximized(struct wl_client *client,
 	struct shell_surface *shsurf = wl_resource_get_user_data(resource);
 	struct weston_output *output;
 
+	surface_clear_next_states(shsurf);
+	shsurf->next_state.maximized = true;
+	shsurf->state_changed = true;
+
+	shsurf->type = SHELL_SURFACE_TOPLEVEL;
+	shell_surface_set_parent(shsurf, NULL);
+
 	if (output_resource)
 		output = wl_resource_get_user_data(output_resource);
 	else
 		output = NULL;
 
-	shell_surface_set_parent(shsurf, NULL);
-
-	surface_clear_next_states(shsurf);
-	set_maximized(shsurf, output);
+	shell_surface_set_output(shsurf, output);
 
-	shsurf->next_state.maximized = true;
-	shsurf->state_changed = true;
+	send_configure_for_surface(shsurf);
 }
 
 /* This is only ever called from set_surface_type(), so there’s no need to
@@ -3280,6 +3272,8 @@ create_common_surface(struct shell_client *owner, void *shell,
 	shsurf->fullscreen.black_view = NULL;
 	wl_list_init(&shsurf->fullscreen.transform.link);
 
+	shsurf->output = get_default_output(shsurf->shell->compositor);
+
 	wl_signal_init(&shsurf->destroy_signal);
 	shsurf->surface_destroy_listener.notify = shell_handle_surface_destroy;
 	wl_signal_add(&surface->destroy_signal,
@@ -3466,7 +3460,7 @@ xdg_surface_set_maximized(struct wl_client *client,
 
 	shsurf->state_requested = true;
 	shsurf->requested_state.maximized = true;
-	set_maximized(shsurf, NULL);
+ 	send_configure_for_surface(shsurf);
 }
 
 static void
@@ -3496,11 +3490,10 @@ xdg_surface_set_fullscreen(struct wl_client *client,
 	else
 		output = NULL;
 
-	shsurf->recommended_output = output;
+	shell_surface_set_output(shsurf, output);
+	shsurf->fullscreen_output = shsurf->output;
 
-	set_fullscreen(shsurf,
-		       WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
-		       0, shsurf->recommended_output);
+	send_configure_for_surface(shsurf);
 }
 
 static void
@@ -4162,8 +4155,7 @@ maximize_binding(struct weston_seat *seat, uint32_t time, uint32_t button, void
 
 	shsurf->state_requested = true;
 	shsurf->requested_state.maximized = !shsurf->state.maximized;
-	if (shsurf->requested_state.maximized)
-		set_maximized(shsurf, NULL);
+	send_configure_for_surface(shsurf);
 }
 
 static void
@@ -4186,10 +4178,7 @@ fullscreen_binding(struct weston_seat *seat, uint32_t time, uint32_t button, voi
 
 	shsurf->state_requested = true;
 	shsurf->requested_state.fullscreen = !shsurf->state.fullscreen;
-	if (shsurf->requested_state.fullscreen)
-		set_fullscreen(shsurf,
-			       WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,
-			       0, shsurf->recommended_output);
+	send_configure_for_surface(shsurf);
 }
 
 static void