Currently these two test cases don't fail either on gecko or stylo even if the
patches in this patch series are not applied, but will fail once the patch for
bug 1374175 (i.e. not returning reconstruction damage from
compute_style_difference in some cases) landed without this patch series on
stylo. That means that, on stylo, reconstruction of details element on removing
child summary triggered by RecreateFramesForContent in
MaybeRecreateContainerForFrameRemoval has not worked well.
MozReview-Commit-ID: El6p0UwWaJb
--HG--
extra : rebase_source : 4f06423f8a23a3d430b7a0d22ff07c316f3e633d