See also: IRC log
plh: what should initiatorType returns for NT? null, empty string, something else?
... I'll keep it as an issue in the spec for now.
Ilya: I rewrote frame timing to only report slow frames
<plh> " Specifications SHOULD only use USVString for APIs that perform text processing and need a string of Unicode scalar values to operate on. Most APIs that use strings should instead be using DOMString, which does not make any interpretations of the code units in the string. When in doubt, use DOMString. "
<igrigorik> ai: add "preflight" and "fetch" to initiatorType