The symbolize_trace script that lives in catapult downloads Chrome symbols from GCS and uses those to symbolize traces. I would like to add a waterfall test for this. This means the bots need to be able to access the gs://chrome-unsigned bucket.

Is this allowed by Infra policy? Presumably some of our bots must have access to these buckets. The following bots will require credentials

https://build.chromium.org/p/tryserver.client.catapult/builders/
Catapult Windows Tryserver
  build78-b1
  build79-b1
Catapult Mac Tryserver
  vm600-m4
Catapult Linux Tryserver
  slave425-c4		
  slave492-c4		
  slave500-c4		
  slave546-c4		
  slave547-c4	
Catapult Android Tryserver 
  build1-b3	
  build37-b4	

https://build.chromium.org/p/client.catapult/builders/
Catapult Windows
  vm114-m3
Catapult Mac
  vm113-m3
Catapult Linux 
  vm600-m3

I've listed all bots we will eventually need. If this is for some reason a lot of work, the only ones we need for my CL:
https://codereview.chromium.org/2950723002/

Are the Mac bots.