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commit-queue@webkit.org authored
https://bugs.webkit.org/show_bug.cgi?id=83889 Patch by Takashi Sakamoto <tasak@google.com> on 2012-05-09 Reviewed by Abhishek Arya. Source/WebCore: RenderScrollbar creates RenderScrollbarPart without any parent renderers. However, if the scrollbar has percent padding styles, non-null parent renderer is required. So after creating/destroying RenderScrollbarPart instances, set owningRenderer(creating)/0 (destroying) as its parent renderer. Test: scrollbars/scrollbar-percent-padding-crash.html scrollbars/scrollbar-percent-padding-crash-expected.txt * rendering/RenderScrollbar.cpp: (WebCore::RenderScrollbar::updateScrollbarPart): Added setParent after creating/destroying RenderScrollbarPart. * rendering/RenderScrollbarPart.cpp: Made RenderScollbar friend, because setParent is protected and RenderScrollbar is not inherited from class RenderObject. LayoutTests: As just invoking layoutTestController.display() invokes scrollbar's WebCore::RenderScrollbarPart::paintIntoRect(), adding display() after invoking layoutTestController.dumpAsText(). * scrollbars/scrollbar-percent-padding-crash.html: Added. * scrollbars/scrollbar-percent-padding-crash-expected.txt: Added. git-svn-id: http://svn.webkit.org/repository/webkit/trunk@116527 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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