Created attachment 528803 [details] [diff] [review]
While reviewing bug 567872 and bug 633209 I came to the conclusion that this comment is wrong. I'd like you to check that you agree with me, since it's sort of important...
Comment on attachment 528803 [details] [diff] [review]
The comments for availableHeight could use some clarification too, though margin collapsing makes that situation more complicated.