[Slimming Paint] Adjust the paint rect for paintOffset when painting column rules.

Source/core/paint/RenderDrawingRecorder.cpp

Index: Source/core/paint/RenderDrawingRecorder.cpp
diff --git a/Source/core/paint/RenderDrawingRecorder.cpp b/Source/core/paint/RenderDrawingRecorder.cpp
index 0ae5d98f85657ecb7b82080e2dfa700b25ba06c7..2d985e3fceebafdea4cfeb86e3b4851f8b9a079b 100644
--- a/Source/core/paint/RenderDrawingRecorder.cpp
+++ b/Source/core/paint/RenderDrawingRecorder.cpp
@@ -11,6 +11,10 @@
 
 namespace blink {
 
+RenderDrawingRecorder::RenderDrawingRecorder(GraphicsContext* context, const LayoutObject& renderer, DisplayItem::Type displayItemType, const LayoutRect& clip)
+    : RenderDrawingRecorder(context, renderer, displayItemType, pixelSnappedIntRect(clip))
+{ }
+
 RenderDrawingRecorder::RenderDrawingRecorder(GraphicsContext* context, const LayoutObject& renderer, PaintPhase phase, const FloatRect& clip)
     : m_drawingRecorder(context, renderer.displayItemClient(), DisplayItem::paintPhaseToDrawingType(phase), clip)
 #ifndef NDEBUG