Bug 1362847 - Allow headless on other Gtk platforms. r=bdahl

MozReview-Commit-ID: 9NRiPQA73ov

--HG--
extra : rebase_source : d9dc0fb9cf671fd05db27cd9dffb300bfdb9dba9

toolkit/xre/nsAppRunner.cpp

@@ -3143,7 +3143,7 @@ XREMain::XRE_mainInit(bool* aExitFlag)
   }
 
   if (gfxPlatform::IsHeadless()) {
-#ifdef XP_LINUX
+#ifdef MOZ_WIDGET_GTK
     Output(false, "*** You are running in headless mode.\n");
 #else
     Output(true, "Error: headless mode is not currently supported on this platform.\n");

widget/headless/tests/xpcshell.ini

@@ -1,5 +1,5 @@
 [DEFAULT]
-skip-if = os != "linux"
+skip-if = toolkit != "gtk2" && toolkit != "gtk3"
 headless = true
 
 [test_headless_clipboard.js]