In the Google Cast SDK Overview video published on YouTube by Google, the presenter says
There are design implications that are driven from the Design Checklist so in addition to the platform specific guidelines for Android, iOS and Chrome, it is important to do a thorough review of the Google Cast Design Checklist.
The sentence reads like legal-speak, but more importantly, it mentions existence of platform specific design guidelines for Chrome. I never knew that there is anything like that. I attempted googling around, I could find guidelines for Android, iOS, but nothing for Chrome. Does anybody know where the Chrome guidelines can be found?