Groomed read_only_test.go.
Groomed read_only_test.go.

jacobsa/timeutil,kahing/gcsfuse,GoogleCloudPlatform/gcsfuse,BanzaiMan/gcsfuse,BanzaiMan/gcsfuse,mbrukman/gcsfuse,jacobsa/ratelimit,GoogleCloudPlatform/gcsfuse,GoogleCloudPlatform/gcsfuse