During the Ryzen launch announcement GCP was listed on their partners, this may only be due to the availability of AMD GPU's but considering this was a CPU-specific talk I'd guess the magic 8-ball says "outlook good".
Based on public talks by GCP engineers, it's very unlikely. Maybe SEV (encrypted VMs) might change that. However, the small glimpse into GCP that you get from looking at their work on KVM would suggest no.
Disclosure: I work on Google Cloud.