Ozone X11 platform

ui/ozone/ozone.gni

Index: ui/ozone/ozone.gni
diff --git a/ui/ozone/ozone.gni b/ui/ozone/ozone.gni
index 867813c50af2a6abb70b274ad903a74f19e9ef3e..4e6bd9122c38098386d53661ec1aa314d7834873 100644
--- a/ui/ozone/ozone.gni
+++ b/ui/ozone/ozone.gni
@@ -17,15 +17,21 @@ declare_args() {
   ozone_platform_egltest = false
   ozone_platform_gbm = false
   ozone_platform_test = false
+  ozone_platform_x11 = false
 
   if (ozone_auto_platforms) {
-    # Use test as the default platform.
-    ozone_platform = "test"
+    if (use_ozone_x11) {
+      ozone_platform = "x11"
+      ozone_platform_x11 = true
+    } else {
+      # Use test as the default platform.
+      ozone_platform = "test"
 
-    # Build all platforms whose deps are in install-build-deps.sh.
-    # Only these platforms will be compile tested by buildbots.
-    ozone_platform_dri = true
-    ozone_platform_test = true
-    ozone_platform_egltest = true
+      # Build all platforms whose deps are in install-build-deps.sh.
+      # Only these platforms will be compile tested by buildbots.
+      ozone_platform_dri = true
+      ozone_platform_test = true
+      ozone_platform_egltest = true
+    }
   }
 }