Check for both use_ozone and is_chromeos for test.

services/ui/display/BUILD.gn

Index: services/ui/display/BUILD.gn
diff --git a/services/ui/display/BUILD.gn b/services/ui/display/BUILD.gn
index e521f4382bd85f7c47b2de014254dfde3279340f..e7d4fe12cd7d2148a500580a0ef29195adf2f408 100644
--- a/services/ui/display/BUILD.gn
+++ b/services/ui/display/BUILD.gn
@@ -40,7 +40,7 @@ source_set("display") {
   }
 }
 
-if (use_ozone) {
+if (use_ozone && is_chromeos) {

[Tom (Use chromium acct), 2016/11/03 18:17:28]

Please add a TODO here to make these tests work on Linux ozone.
If possible, also create/Xref a bug and make sure to cc me and
tonikitoo@igalia.com

[kylechar, 2016/11/03 18:23:55]

Screen management is really a Chrome OS only concept. If we're running on
another OS then it's the OS that will do those things and not Chrome.

[rjkroege, 2016/11/04 22:52:44]

But... in a future CrOS=0, ozone=1 world, we will still want mus platform screen
to do something ratinonal yes? in other words, I think that there's still work
for tonikitoo here eventually.

   test("display_service_unittests") {
     sources = [
       "platform_screen_ozone_unittests.cc",