Fix bug of animated table col/section/row background

third_party/WebKit/Source/core/layout/LayoutBox.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2006, 2007 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 1286 matching lines @@
   static bool mustInvalidateFillLayersPaintOnHeightChange(const FillLayer&);
 
   bool mustInvalidateBackgroundOrBorderPaintOnHeightChange() const;
   bool mustInvalidateBackgroundOrBorderPaintOnWidthChange() const;
 
   // Returns true if the box intersects the viewport visible to the user.
   bool intersectsVisibleViewport() const;
 
   bool hasNonCompositedScrollbars() const final;
 
+  void ensureIsReadyForPaintInvalidation() override;
+
  protected:
   void willBeDestroyed() override;
 
   void insertedIntoTree() override;
   void willBeRemovedFromTree() override;
 
   void styleWillChange(StyleDifference, const ComputedStyle& newStyle) override;
   void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
   void updateFromStyle() override;
 
@@ skipping 304 matching lines @@
 
 inline bool LayoutBox::isForcedFragmentainerBreakValue(EBreak breakValue) {
   return breakValue == BreakColumn || breakValue == BreakLeft ||
          breakValue == BreakPage || breakValue == BreakRecto ||
          breakValue == BreakRight || breakValue == BreakVerso;
 }
 
 }  // namespace blink
 
 #endif  // LayoutBox_h