The spec says that single-line flex containers should stretch their one flex
line to the flex container's cross size, and should ignore 'align-content'.
Initially, the spec defined 'single-line' to include any flex container that
happens to have only 1 line (even if it's got 'flex-wrap:wrap' or
'wrap-reverse'). But later, the term 'single-line' was intentionally redefined
to *only* include flex containers that have 'flex-wrap: nowrap'. So, instead
of checking the line-count, we should instead check 'flex-wrap', when deciding
whether to stretch our one line & ignore 'align-content'.
MozReview-Commit-ID: D2ZMIBS16ui
The spec says that single-line flex containers should stretch their one flex
line to the flex container's cross size, and should ignore 'align-content'.
Initially, the spec defined 'single-line' to include any flex container that
happens to have only 1 line (even if it's got 'flex-wrap:wrap' or
'wrap-reverse'). But later, the term 'single-line' was intentionally redefined
to *only* include flex containers that have 'flex-wrap: nowrap'. So, instead
of checking the line-count, we should instead check 'flex-wrap', when deciding
whether to stretch our one line & ignore 'align-content'.
MozReview-Commit-ID: D2ZMIBS16ui
