Port gles2_conform_test_windowless action to GN build.

build/config/linux/gtk/BUILD.gn

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/linux/pkg_config.gni")
 
 assert(is_linux, "This file should only be referenced on Linux")
 
 # Depend on //build/config/linux/gtk to use GTK.
 #
@@ skipping 10 matching lines @@
   ]
 }
 
 # Basically no parts of Chrome should depend on GTK. To prevent accidents, the
 # parts that explicitly need GTK are whitelisted on this target.
 group("gtk") {
   visibility = [
     "//chrome/browser/ui/libgtk2ui",
     "//remoting/host",
   ]
+  if (internal_gles2_conform_tests) {

[Dirk Pranke, 2015/03/30 20:38:21]

this won't work because that variable isn't in scope in this file.

Just make this unconditional, i.e., add the target to the list after line 28.

[tfarina, 2015/03/31 01:00:07]

Done.

[tfarina, 2015/03/31 01:00:07]

Done.

+    visibility +=
+        [ "//gpu/gles2_conform_support:gles2_conform_test_windowless" ]
+  }
   public_configs = [ ":gtk_internal_config" ]
 }
 
 # Depend on "gtkprint" to get this.
 pkg_config("gtkprint_internal_config") {
   packages = [ "gtk+-unix-print-2.0" ]
 }
 
 group("gtkprint") {
   visibility = [ "//chrome/browser/ui/libgtk2ui" ]
   public_configs = [ ":gtkprint_internal_config" ]
 }