Add GPU FYI Linux Ozone builder.

content/test/gpu/generate_buildbot_json.py

Index: content/test/gpu/generate_buildbot_json.py
diff --git a/content/test/gpu/generate_buildbot_json.py b/content/test/gpu/generate_buildbot_json.py
index 742cf75118b71ee3f5316a44ec0167f8a430dda1..8ece4c54617b42264061b42d729566358c5eb9a0 100755
--- a/content/test/gpu/generate_buildbot_json.py
+++ b/content/test/gpu/generate_buildbot_json.py
@@ -134,6 +134,7 @@ FYI_WATERFALL = {
     'Linux ChromiumOS Builder' : {
       'additional_compile_targets' : [ "All" ]
     },
+    'Linux ChromiumOS Ozone Builder' : {},
   },
 
   'testers': {