Fix unscrollable scrollers after closing a <dialog>.

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

Index: third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp b/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
index 025e444070fa6c55cdb04a0b071f4e326b27cf7d..98686ea825156d96b9f5222dbaced0d9ad2ba69b 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerScrollableArea.cpp
@@ -1602,10 +1602,11 @@ void PaintLayerScrollableArea::updateScrollableAreaSet(bool hasOverflow) {
     return;
 
   // FIXME: Does this need to be fixed later for OOPI?
-  bool isVisibleToHitTest = box().visibleToHitTesting();
-  if (HTMLFrameOwnerElement* owner = frame->deprecatedLocalOwner())
-    isVisibleToHitTest &=
-        owner->layoutObject() && owner->layoutObject()->visibleToHitTesting();
+  bool isVisibleToHitTest = box().style()->visibleToHitTesting();
+  if (HTMLFrameOwnerElement* owner = frame->deprecatedLocalOwner()) {
+    isVisibleToHitTest &= owner->layoutObject() &&
+                          owner->layoutObject()->style()->visibleToHitTesting();
+  }
 
   bool didScrollOverflow = m_scrollsOverflow;