test/trace_processor/parsing/chrome_metadata.out

"id","type","name","key_type","int_value","str_value"
0,"metadata","cr-playstore_version_code","single",101,"[NULL]"
1,"metadata","cr-enabled_categories","single","[NULL]","cat1,cat2,cat3"
2,"metadata","trace_size_bytes","single",50,"[NULL]"