Support edge-inclusive intersections in mapToVisibleRectInAncestorSpace

third_party/WebKit/Source/core/layout/LayoutTableCell.cpp

Index: third_party/WebKit/Source/core/layout/LayoutTableCell.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutTableCell.cpp b/third_party/WebKit/Source/core/layout/LayoutTableCell.cpp
index 618c650f391ed74df3c48ef4b7e61c411eb45335..71dd119e79cf501a7220a0504098deb84683c851 100644
--- a/third_party/WebKit/Source/core/layout/LayoutTableCell.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutTableCell.cpp
@@ -357,18 +357,18 @@ LayoutRect LayoutTableCell::clippedOverflowRectForPaintInvalidation(const Layout
     LayoutPoint location(std::max(LayoutUnit(left), -visualOverflowRect().x()), std::max(LayoutUnit(top), -visualOverflowRect().y()));
     LayoutRect r(-location.x(), -location.y(), location.x() + std::max(size().width() + right, visualOverflowRect().maxX()), location.y() + std::max(size().height() + bottom, visualOverflowRect().maxY()));
 
-    mapToVisibleRectInAncestorSpace(paintInvalidationContainer, r, paintInvalidationState);
+    mapToVisibleRectInAncestorSpace(paintInvalidationContainer, r, paintInvalidationState, false);
     return r;
 }
 
-void LayoutTableCell::mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect& r, const PaintInvalidationState* paintInvalidationState) const
+bool LayoutTableCell::mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect& r, const PaintInvalidationState* paintInvalidationState, bool edgeInclusive) const
 {
     if (ancestor == this)
-        return;
+        return true;
     r.setY(r.y());
     if ((!paintInvalidationState || !paintInvalidationState->canMapToAncestor(ancestor)) && parent())
         r.moveBy(-parentBox()->location()); // Rows are in the same coordinate space, so don't add their offset in.
-    LayoutBlockFlow::mapToVisibleRectInAncestorSpace(ancestor, r, paintInvalidationState);
+    return LayoutBlockFlow::mapToVisibleRectInAncestorSpace(ancestor, r, paintInvalidationState, edgeInclusive);
 }
 
 int LayoutTableCell::cellBaselinePosition() const