[epiphany/wip/lantw/build-Fix-build-on-non-Linux-systems] build: Fix build on non-Linux systems

[Ting-Wei Lan <lantw src gnome org>]

commit 0008b623eba040c0d173b16893cac479fc309141
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Sun Dec 1 15:19:30 2019 +0800

    build: Fix build on non-Linux systems
    
    Function ephy_flatpak_utils_set_is_web_process_extension is called
    unconditionally, so it should exist regardless of the OS.

 lib/ephy-flatpak-utils.c | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/lib/ephy-flatpak-utils.c b/lib/ephy-flatpak-utils.c
index 5407e43d9..a344bddf8 100644
--- a/lib/ephy-flatpak-utils.c
+++ b/lib/ephy-flatpak-utils.c
@@ -263,6 +263,11 @@ ephy_open_file_via_flatpak_portal_finish (GAsyncResult  *result,
 
 #else /* __linux__ */
 
+void
+ephy_flatpak_utils_set_is_web_process_extension (void)
+{
+}
+
 gboolean
 ephy_is_running_inside_flatpak (void)
 {