Google Play Store on Chromebook wasn't working properly after installation of the Netskope Chromebook app. I added a certificate-pinned application specifying these URLs and added a steering bypass for ChromeOS. The store works and apps can be downloaded.
Note: We have a managed google play store on android & ChromeOS that only has approved apps.
play.googleapis.com
googleusercontent.com
android.clients.google.com
ggpht.com
gvt1.com
downloads.providers.android.com