Allow gaming_seat to use ozone gamepad as back-end

components/exo/BUILD.gn

Index: components/exo/BUILD.gn
diff --git a/components/exo/BUILD.gn b/components/exo/BUILD.gn
index 1b48931fed87d251ba48649098407a661378b7dc..616914a1a46faf6ab343e01d7519b0bce3aa09e0 100644
--- a/components/exo/BUILD.gn
+++ b/components/exo/BUILD.gn
@@ -15,6 +15,8 @@ source_set("exo") {
     "display.h",
     "gaming_seat.cc",
     "gaming_seat.h",
+    "gaming_seat_joydev.cc",
+    "gaming_seat_joydev.h",
     "keyboard.cc",
     "keyboard.h",
     "keyboard_delegate.h",
@@ -71,7 +73,10 @@ source_set("exo") {
   ]
 
   if (use_ozone) {
+    sources += [ "gaming_seat_ozone.cc" ]
+    sources += [ "gaming_seat_ozone.h" ]
     deps += [ "//ui/ozone" ]
+    deps += [ "//ui/events/ozone:events_ozone_evdev" ]
   }
 
   if (is_chromeos) {
@@ -111,7 +116,7 @@ source_set("unit_tests") {
   sources = [
     "buffer_unittest.cc",
     "display_unittest.cc",
-    "gaming_seat_unittest.cc",
+    "gaming_seat_joydev_unittest.cc",
     "keyboard_unittest.cc",
     "pointer_unittest.cc",
     "shared_memory_unittest.cc",