webkit_unit_tests:
 All/PaintPropertyTreeBuilderTest.CompositedUnderMultiColumn/2 and 
 All/PaintPropertyTreeBuilderTest.CompositedUnderMultiColumn/3

layout tests:
 fast/multicol/composited-layer-will-change.html
 fast/multicol/hit-test-gap-between-pages-flipped.html
 fast/multicol/hit-test-gap-between-pages.html
 fast/multicol/multicol-becomes-paged-fixed-height.html
 fast/multicol/scrollable-basic.html
 fast/multicol/scrollbar-taller-than-content-box-freeze.html
 fast/multicol/scrolling-column-rules.html

The crash stack is like:
[184411:184411:1220/171025.308316:779054618615:FATAL:GeometryMapper.cpp(256)] Check failed: success. 
#0 0x000003d1bbbc base::debug::StackTrace::StackTrace()
#1 0x000003d34a0c logging::LogMessage::~LogMessage()
#2 0x00000469cb6a blink::GeometryMapper::LocalToAncestorClipRect()
#3 0x00000569ba5a blink::PaintLayerClipper::CalculateRects()
#4 0x00000568f48e blink::PaintLayer::CollectFragmentsForPaint()
#5 0x00000569ea86 blink::PaintLayerPainter::PaintLayerContents()
#6 0x00000569dfc1 blink::PaintLayerPainter::PaintLayerContentsCompositingAllPhases()
#7 0x00000569d72c blink::PaintLayerPainter::Paint()
#8 0x0000056a0697 blink::PaintLayerPainter::PaintChildren()
#9 0x00000569f45e blink::PaintLayerPainter::PaintLayerContents()
#10 0x00000569dfc1 blink::PaintLayerPainter::PaintLayerContentsCompositingAllPhases()
#11 0x00000569d72c blink::PaintLayerPainter::Paint()
#12 0x0000056a0697 blink::PaintLayerPainter::PaintChildren()
#13 0x00000569f45e blink::PaintLayerPainter::PaintLayerContents()
#14 0x00000569dfc1 blink::PaintLayerPainter::PaintLayerContentsCompositingAllPhases()
#15 0x00000569d72c blink::PaintLayerPainter::Paint()
#16 0x00000569d514 blink::PaintLayerPainter::Paint()
#17 0x000005668263 blink::FramePainter::PaintContents()
#18 0x0000056675e2 blink::FramePainter::Paint()
#19 0x000004fc70b5 blink::LocalFrameView::PaintInternal()
#20 0x000004fc603b blink::LocalFrameView::PaintTree()

It crashes when mapping clip rect from one fragment clip to another fragment clip. We may need to adjust the fragment clip hierarchy to avoid such crashes (or avoid such mapping?).