Adding Wayland support for ui/gfx

ui/gfx/canvas_skia_linux.cc

Index: ui/gfx/canvas_skia_linux.cc
diff --git a/ui/gfx/canvas_skia_linux.cc b/ui/gfx/canvas_skia_linux.cc
index 17da4fc51dcbae01c727adb0fc31115ae5edc334..7cf72d50d2ddbaefd603c9f0c88951c8e88c9783 100644
--- a/ui/gfx/canvas_skia_linux.cc
+++ b/ui/gfx/canvas_skia_linux.cc
@@ -45,17 +45,20 @@ void UpdateCairoFontOptions() {
   if (!cairo_font_options)
     cairo_font_options = cairo_font_options_create();
 
-  GtkSettings* gtk_settings = gtk_settings_get_default();
   gint antialias = 0;
   gint hinting = 0;
   gchar* hint_style = NULL;
   gchar* rgba_style = NULL;
+
+#if !defined(USE_WAYLAND)
+  GtkSettings* gtk_settings = gtk_settings_get_default();
   g_object_get(gtk_settings,
                "gtk-xft-antialias", &antialias,
                "gtk-xft-hinting", &hinting,
                "gtk-xft-hintstyle", &hint_style,
                "gtk-xft-rgba", &rgba_style,
                NULL);
+#endif
 
   // g_object_get() doesn't tell us whether the properties were present or not,
   // but if they aren't (because gnome-settings-daemon isn't running), we'll get