Verify that layers are reported properly.
Layers for document scope:
{
name : implicit outer layer
order : 5
subLayers : [
[0] : {
name : base
order : 1
subLayers : [
[0] : {
name : nested
order : 0
}
]
}
[1] : {
name : ext
order : 2
}
[2] : {
name : empty
order : 3
}
[3] : {
name : stylesheet
order : 4
}
]
}
Layers for shadow root scope:
{
name : implicit outer layer
order : 2
subLayers : [
[0] : {
name : shadow1
order : 0
}
[1] : {
name : shadow2
order : 1
}
]
}
Layers for empty shadow root scope:
{
name : implicit outer layer
order : 0
}