Partly revert of Conditionally create PaintLayer's scrollable area object

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

Index: third_party/WebKit/Source/core/paint/PaintLayer.h
diff --git a/third_party/WebKit/Source/core/paint/PaintLayer.h b/third_party/WebKit/Source/core/paint/PaintLayer.h
index 23adb3e27190005eaf24509c7b014addd9322369..9d84be86cb0c43633b9c75e0f8561b28b8529179 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayer.h
+++ b/third_party/WebKit/Source/core/paint/PaintLayer.h
@@ -744,7 +744,9 @@ private:
     void updateReflectionInfo(const ComputedStyle*);
     FilterEffectBuilder* updateFilterEffectBuilder() const;
 
-    bool requiresScrollableArea() const { return m_layoutObject->hasOverflowClip() || m_layoutObject->isLayoutView() || m_layoutObject->styleRef().resize() != RESIZE_NONE; }
+    // FIXME: We could lazily allocate our ScrollableArea based on style properties ('overflow', ...)
+    // but for now, we are always allocating it for LayoutBox as it's safer. crbug.com/467721.
+    bool requiresScrollableArea() const { return layoutBox(); }
     void updateScrollableArea();
 
     void dirtyAncestorChainVisibleDescendantStatus();