Scrub ozone files from linux GN build

content/browser/BUILD.gn

Index: content/browser/BUILD.gn
diff --git a/content/browser/BUILD.gn b/content/browser/BUILD.gn
index 97a6dd4146ef64a3a7d3a08cd281286a3e2d1e8d..865298387b2f45637155759704b94b7c725d03f6 100644
--- a/content/browser/BUILD.gn
+++ b/content/browser/BUILD.gn
@@ -324,12 +324,17 @@ source_set("browser") {
     sources -= [
       "battery_status/battery_status_manager_default.cc",
       "geolocation/wifi_data_provider_linux.cc",
-      "power_save_blocker_ozone.cc",
       "power_save_blocker_x11.cc",
     ]
     deps += [ "//chromeos:power_manager_proto" ]
   }
 
+  if (!use_ozone || is_chromeos) {
+    sources -= [
+      "power_save_blocker_ozone.cc",
+    ]
+  }
+
   if (use_aura) {
     deps += [
       "//ui/aura",
@@ -376,6 +381,15 @@ source_set("browser") {
     deps += [ "//ui/compositor" ]
   }
 
+  if (!use_ozone) {
+    sources -= [
+      "compositor/overlay_candidate_validator_ozone.cc",
+      "compositor/overlay_candidate_validator_ozone.h",
+      "compositor/software_output_device_ozone.cc",
+      "compositor/software_output_device_ozone.h",
+    ]
+  }
+
   if (enable_web_speech) {
     deps += [
       "//third_party/flac",