wayland-protocols: Add gaming-input-unstable-v1 protocol

third_party/wayland-protocols/BUILD.gn

Index: third_party/wayland-protocols/BUILD.gn
diff --git a/third_party/wayland-protocols/BUILD.gn b/third_party/wayland-protocols/BUILD.gn
index cfbf3eb74cbbc99ef8a7b7aadfc00416f72a2624..e7660e60a9909c317e5c4db5565dc94bcf3a0f85 100644
--- a/third_party/wayland-protocols/BUILD.gn
+++ b/third_party/wayland-protocols/BUILD.gn
@@ -148,3 +148,24 @@ source_set("remote_shell_protocol") {
 
   public_configs = [ ":remote_shell_protocol_config" ]
 }
+
+config("gamepads_protocol_config") {
+  include_dirs = [ "include/protocol" ]
+}
+
+source_set("gamepads_protocol") {
+  sources = [
+    "include/protocol/gamepads-unstable-v1-client-protocol.h",
+    "include/protocol/gamepads-unstable-v1-server-protocol.h",
+    "protocol/gamepads-protocol.c",
+  ]
+
+  deps = [
+    "//third_party/wayland:wayland_util",
+  ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
+  public_configs = [ ":gamepads_protocol_config" ]
+}