[css-typed-om] "get all values from a StylePropertyMap" assumes underlying model might not be list

[dbaron]

Typed OM defines an algorithm to get all values from a StylePropertyMap. This says:

3. If StylePropertyMap’s property model contains an entry for property:

   1. If property is a list-valued property, return the list of values assigned to that property.

   2. If property is not a list-valued property, let values initially be the empty list and append the value assigned to the property to this list and return values.

However, earlier the spec says:

A StylePropertyMapReadOnly object has an associated property model, which is a list of property - sequence<CSSStyleValue> pairs.

Given this, it's not clear why this distinction between list-valued and non-list-valued properties needs to be made; they're all represented as sequence<CSSStyleValue>.

[darrnshn]

Fixed in #592

[dbaron]

The fix looks OK (modulo the missing comma), but the text appears to be completely gone from the spec just a few days later... I guess it's been turned into the definition of getAll.