Don't cancel out scroll offset when calculating the clip rectangle for multicol.

third_party/WebKit/Source/core/paint/PaintLayer.cpp

Index: third_party/WebKit/Source/core/paint/PaintLayer.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayer.cpp b/third_party/WebKit/Source/core/paint/PaintLayer.cpp
index 8778e090b49c6ce94ff53a238e98e37b4aabf8c0..755a8908d20bfeeed6361880c19b4006dc8e3a5a 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayer.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayer.cpp
@@ -1635,7 +1635,7 @@ void PaintLayer::collectFragments(
   // Make the dirty rect relative to the fragmentation context (multicol
   // container, etc.).
   LayoutRect dirtyRectInMulticolContainer(dirtyRect);
-  dirtyRectInMulticolContainer.move(enclosingPaginationLayer()->location() -
+  dirtyRectInMulticolContainer.move(enclosingFlowThread->physicalLocation() -
                                     offsetOfPaginationLayerFromRoot);
 
   // Slice the layer into fragments. Each fragment needs to be processed (e.g.