This CL moves the base::Feature from content_features.h to
a generated feature from runtime_enabled_features.json5.
This means that the base::Feature can be default-enabled
while the web API is co...
google want websites to be able to check whether you're running an approved browser. And they also want to be the ones to have the authority to decide what an "approved browser" is.
Given that google is an advertising company that owns a browser, constantly tries to cripple ad blockers they will probably simply start saying that any browser that doesn't implement the stuff they want (crippled ad blockers) is "untrustworthy"