Build the Ozone Wayland platform for codesearch-gen bots

Bug: 1091153
Test: trybots
Change-Id: I48c79a52fd5af68db40b1c53bd908643e331b424
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2230423Reviewed-by: Michael Spang <spang@chromium.org>
Commit-Queue: Eliot Courtney <edcourtney@chromium.org>
Cr-Commit-Position: refs/heads/master@{#775441}

ui/ozone/ozone.gni

@@ -4,6 +4,7 @@
 
 import("//build/config/chromecast_build.gni")
 import("//build/config/ui.gni")
+import("//build/toolchain/kythe.gni")
 import("//build/toolchain/toolchain.gni")
 
 declare_args() {
@@ -46,6 +47,9 @@ declare_args() {
     ozone_platform = "headless"
     ozone_platform_headless = true
 
+    # Enable the Ozone Wayland platform for codesearch-gen bots so we get cross-references in codesearch.
+    ozone_platform_wayland = enable_kythe_annotations
+
     if (is_cast_audio_only) {
       # Just use headless for audio-only Cast platforms.
     } else if (is_chromecast && !is_fuchsia) {