Fix paint invalidation rect tracking within composited scrolling layers.

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 552 matching lines @@
     virtual void panScroll(const IntPoint&);
 
     bool hasAutoVerticalScrollbar() const { return hasOverflowClip() && (style()->overflowY() == OAUTO || style()->overflowY() == OPAGEDY || style()->overflowY() == OOVERLAY); }
     bool hasAutoHorizontalScrollbar() const { return hasOverflowClip() && (style()->overflowX() == OAUTO || style()->overflowX() == OOVERLAY); }
     bool scrollsOverflow() const { return scrollsOverflowX() || scrollsOverflowY(); }
 
     bool hasScrollableOverflowX() const { return scrollsOverflowX() && pixelSnappedScrollWidth() != pixelSnappedClientWidth(); }
     bool hasScrollableOverflowY() const { return scrollsOverflowY() && pixelSnappedScrollHeight() != pixelSnappedClientHeight(); }
     virtual bool scrollsOverflowX() const { return hasOverflowClip() && (style()->overflowX() == OSCROLL || hasAutoHorizontalScrollbar()); }
     virtual bool scrollsOverflowY() const { return hasOverflowClip() && (style()->overflowY() == OSCROLL || hasAutoVerticalScrollbar()); }
-    bool usesCompositedScrolling() const;
 
     // Elements such as the <input> field override this to specify that they are scrollable
     // outside the context of the CSS overflow style
     virtual bool isIntrinsicallyScrollable(ScrollbarOrientation orientation) const { return false; }
 
     bool hasUnsplittableScrollingOverflow() const;
     bool isUnsplittableForPagination() const;
 
     LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = nullptr) override;
 
@@ skipping 224 matching lines @@
     // These include tables, positioned objects, floats and flexible boxes.
     virtual void computePreferredLogicalWidths() { clearPreferredLogicalWidthsDirty(); }
 
     LayoutBoxRareData& ensureRareData()
     {
         if (!m_rareData)
             m_rareData = adoptPtr(new LayoutBoxRareData());
         return *m_rareData.get();
     }
 
-    bool needToSavePreviousBoxSizes();
-    void savePreviousBoxSizesIfNeeded();
+    bool needToSavePreviousBoxSizes(const LayoutBoxModelObject& paintInvalidationContainer);
+    void savePreviousBoxSizesIfNeeded(const LayoutBoxModelObject& paintInvalidationContainer);
     LayoutSize computePreviousBorderBoxSize(const LayoutSize& previousBoundsSize) const;
 
     bool logicalHeightComputesAsNone(SizeType) const;
 
     bool isBox() const = delete; // This will catch anyone doing an unnecessary check.
 
     void frameRectChanged()
     {
         // The frame rect may change because of layout of other objects.
         // Should check this object for paint invalidation.
@@ skipping 101 matching lines @@
         if (UNLIKELY(inlineBoxWrapper() != nullptr))
             deleteLineBoxWrapper();
     }
 
     ensureRareData().m_inlineBoxWrapper = boxWrapper;
 }
 
 } // namespace blink
 
 #endif // LayoutBox_h