[webkit-dev] ScrollbarPart and the way it is used

[Holger Freyther]

Hey,

So ScrollBarPart is a bitmask and could be ored together but then I see code 
like the below:

switch(part) {
	case FooStart:
	case FooEnd:
}

I'm a bit confused in which direction to go here. This was triggered by 
r36684.

z.