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94b6b2636a
Create UUID v4.
Create prefixed ids. To support more of the CDP protocol, we need to remove the
hard-coded IDs (session, browser context, frame, loader, ...) and be able to
dynamically create them, i.e. creating a new BrowserContextId when
Target.createBrowserContext is called.
var frame_id = id.Incremental(u16, "FRM"){};
frame_id.next() == "FRM-1"
frame_id.next() == "FRM-2"
Generation is allocation-free (the returned string is only valid until the
next call to next()). This is not thread safe, each CDP instance will have its
own generator (for each id it needs to generate).
The generated IDs are different than what Chrome uses, i.e.
BROWSERSESSIONID597D9875C664CAC0. I looked at various drivers and none have
any expectations beyond a string. Shorter IDs will be more efficient. Also, the
ID can cheeply be converted to and from an integer, allowing for lookups via
AutoHashMap(u16) instead of StringHashMap.