(WIP) Invalidation during painting (for synchronized painting)

third_party/WebKit/Source/core/layout/LayoutView.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@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
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 409 matching lines @@
 void LayoutView::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset) const
 {
     ViewPainter(*this).paint(paintInfo, paintOffset);
 }
 
 void LayoutView::paintBoxDecorationBackground(const PaintInfo& paintInfo, const LayoutPoint&) const
 {
     ViewPainter(*this).paintBoxDecorationBackground(paintInfo);
 }
 
-void LayoutView::invalidateTreeIfNeeded(PaintInvalidationState& paintInvalidationState)
+PaintInvalidationReason LayoutView::invalidatePaintIfNeeded(PaintInvalidationState& paintInvalidationState, const LayoutBoxModelObject& paintInvalidationContainer)
 {
     ASSERT(!needsLayout());
 
     // We specifically need to issue paint invalidations for the viewRect since other layoutObjects
     // short-circuit on full-paint invalidation.
     LayoutRect dirtyRect = viewRect();
     if (doingFullPaintInvalidation() && !dirtyRect.isEmpty()) {
         const LayoutBoxModelObject& paintInvalidationContainer = paintInvalidationState.paintInvalidationContainer();
         PaintLayer::mapRectToPaintInvalidationBacking(this, &paintInvalidationContainer, dirtyRect, &paintInvalidationState);
         invalidatePaintUsingContainer(paintInvalidationContainer, dirtyRect, PaintInvalidationFull);
         invalidateDisplayItemClientsWithPaintInvalidationState(paintInvalidationContainer, paintInvalidationState, PaintInvalidationFull);
     }
-    LayoutBlock::invalidateTreeIfNeeded(paintInvalidationState);
+    return LayoutBlock::invalidatePaintIfNeeded(paintInvalidationState, paintInvalidationContainer);
 }
 
 static void setShouldDoFullPaintInvalidationForViewAndAllDescendantsInternal(LayoutObject* object)
 {
     object->setShouldDoFullPaintInvalidation();
     for (LayoutObject* child = object->slowFirstChild(); child; child = child->nextSibling()) {
         setShouldDoFullPaintInvalidationForViewAndAllDescendantsInternal(child);
     }
 }
 
@@ skipping 543 matching lines @@
 }
 
 void LayoutView::sendMediaPositionChangeNotifications(const IntRect& visibleRect)
 {
     for (auto& media : m_mediaForPositionNotification) {
         media->notifyPositionMayHaveChanged(visibleRect);
     }
 }
 
 } // namespace blink