Fix paint invalidation rect of LayoutView

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

Index: third_party/WebKit/Source/core/layout/LayoutView.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutView.cpp b/third_party/WebKit/Source/core/layout/LayoutView.cpp
index edffcbc88e4da8d531a89317fb15519b58254808..939b94500ec2a7b95be789cd6ff6019e08a9ab4d 100644
--- a/third_party/WebKit/Source/core/layout/LayoutView.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutView.cpp
@@ -323,6 +323,13 @@ LayoutRect LayoutView::visualOverflowRect() const
     return LayoutRect(documentRect());
 }
 
+LayoutRect LayoutView::localOverflowRectForPaintInvalidation() const
+{
+    // TODO(wangxianzhu): This is only required without rootLayerScrolls (though it is also correct
+    // but unnecessary with rootLayerScrolls) because of the special LayoutView overflow model.
+    return visualOverflowRect();
+}
+
 void LayoutView::mapLocalToAncestor(const LayoutBoxModelObject* ancestor, TransformState& transformState, MapCoordinatesFlags mode) const
 {
     if (!ancestor && mode & UseTransforms && shouldUseTransformFromContainer(0)) {