Specified the sink names to use for violation events.

[koto]

The logic is to fetch the sink name from the IDL construct identifier that has a [TrustedTypes] extended attribute (i.e. an attribute name, or function name), and to prefix it with an Element local name that the logic was applied to (or object constructor name if a context object is not an Element). eval is a special case, as it's not bound to any object.

Example sink names:

a.href
span.innerHTML
Window.open
Document.write
eval
Window.setTimeout

These sink names will be used when reporting violations (in a 'sample' field).