cku 097d8da362 Bug 1304011 - Part 4. For css-mask, compute frame offset by the current frame. r=mstange
MozReview-Commit-ID: K6ZUoiA9jrC

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extra : rebase_source : 6a56e5d072062f06452e653187a0d6eb5d5c3eac
2016-09-22 13:38:55 +08:00
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2016-09-23 12:48:43 +02:00