[gtk/gsk-public-symbols: 1/2] Revert "Do not install GSK headers for missing backends"

[Emmanuele Bassi <ebassi src gnome org>]

commit 20d0d6fae2d587c8a88bc1720bfa4c34185d83f9
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sat Apr 11 15:41:47 2020 +0100

    Revert "Do not install GSK headers for missing backends"
    
    This reverts commit cd5cded430c37fcb57d0ecc03f8fdf2fdbe12c54.
    
    The headers are public, but the symbols availability is conditional on
    the GTK build.

 gsk/meson.build | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)
---
diff --git a/gsk/meson.build b/gsk/meson.build
index 0b1d0d7b3f..8aeae9e7e8 100644
--- a/gsk/meson.build
+++ b/gsk/meson.build
@@ -60,7 +60,6 @@ gsk_public_headers = files([
 ])
 install_headers(gsk_public_headers, 'gsk.h', subdir: 'gtk-4.0/gsk')
 
-
 gsk_public_gl_headers = files([
   'gl/gskglrenderer.h'
 ])
@@ -70,20 +69,14 @@ gsk_public_headers += gsk_public_gl_headers
 gsk_public_broadway_headers = files([
   'broadway/gskbroadwayrenderer.h'
 ])
-
-if get_variable('broadway_enabled')
-  install_headers(gsk_public_broadway_headers, subdir: 'gtk-4.0/gsk/broadway')
-  gsk_public_headers += gsk_public_broadway_headers
-endif
+install_headers(gsk_public_broadway_headers, subdir: 'gtk-4.0/gsk/broadway')
+gsk_public_headers += gsk_public_broadway_headers
 
 gsk_public_vulkan_headers = files([
   'vulkan/gskvulkanrenderer.h'
 ])
-
-if have_vulkan
-  install_headers(gsk_public_vulkan_headers, subdir: 'gtk-4.0/gsk/vulkan')
-  gsk_public_headers += gsk_public_vulkan_headers
-endif
+install_headers(gsk_public_vulkan_headers, subdir: 'gtk-4.0/gsk/vulkan')
+gsk_public_headers += gsk_public_vulkan_headers
 
 gsk_private_vulkan_shaders = []
 # This is an odd split because we use configure_file() below to workaround