Robert O'Callahan 79a9fa270a Bug 657401. Ensure that when our double-buffering logic expects layers to clip to their visible regions, we actually do. r=tnikkel
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extra : rebase_source : 16ea17d5a6a0177a26a3d38ae587290e194234b1
2011-08-12 10:44:50 +12:00
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