[SPv2] Paint invalidation in PreWalkTreeWalk, plumbed on PaintInvalidationState

third_party/WebKit/Source/core/frame/FrameView.h

 /*
    Copyright (C) 1997 Martin Jones (mjones@kde.org)
              (C) 1998 Waldo Bastian (bastian@kde.org)
              (C) 1998, 1999 Torben Weis (weis@kde.org)
              (C) 1999 Lars Knoll (knoll@kde.org)
              (C) 1999 Antti Koivisto (koivisto@kde.org)
    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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
@@ skipping 585 matching lines @@
     ClipPaintPropertyNode* contentClip() const { return m_contentClip.get(); }
 
     // TODO(ojan): Merge this with IntersectionObserver once it lands.
     IntRect computeVisibleArea();
 
     // Viewport size that should be used for viewport units (i.e. 'vh'/'vw').
     FloatSize viewportSizeForViewportUnits() const;
 
     ScrollAnchor& scrollAnchor() { return m_scrollAnchor; }
 
+    // For PaintInvalidator temporarily. TODO(wangxianzhu): Move into PaintInvalidator.
+    void invalidatePaintIfNeeded(const PaintInvalidationState&);
+
 protected:
     // Scroll the content via the compositor.
     bool scrollContentsFastPath(const IntSize& scrollDelta);
 
     // Scroll the content by invalidating everything.
     void scrollContentsSlowPath(const IntRect& updateRect);
 
     // These functions are used to create/destroy scrollbars.
     void setHasHorizontalScrollbar(bool);
     void setHasVerticalScrollbar(bool);
@@ skipping 18 matching lines @@
         STACK_ALLOCATED();
     public:
         explicit InUpdateScrollbarsScope(FrameView* view)
             : m_scope(view->m_inUpdateScrollbars, true)
         { }
     private:
         TemporaryChange<bool> m_scope;
     };
 
     // Only for LayoutPart to traverse into sub frames during paint invalidation.
-    void invalidateTreeIfNeeded(PaintInvalidationState&);
+    void invalidateTreeIfNeeded(const PaintInvalidationState&);
 
 private:
     explicit FrameView(LocalFrame*);
 
     void setScrollOffset(const DoublePoint&, ScrollType) override;
 
     enum LifeCycleUpdateOption {
         OnlyUpToLayoutClean,
         OnlyUpToCompositingCleanPlusScrolling,
         AllPhasesExceptPaint,
@@ skipping 283 matching lines @@
     if (m_visuallyNonEmptyPixelCount > visualPixelThreshold)
         setIsVisuallyNonEmpty();
 }
 
 DEFINE_TYPE_CASTS(FrameView, Widget, widget, widget->isFrameView(), widget.isFrameView());
 DEFINE_TYPE_CASTS(FrameView, ScrollableArea, scrollableArea, scrollableArea->isFrameView(), scrollableArea.isFrameView());
 
 } // namespace blink
 
 #endif // FrameView_h