Remove outdated FIXME

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 357 matching lines @@
 }
 
 void LayoutView::invalidateTreeIfNeeded(PaintInvalidationState& paintInvalidationState)
 {
     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();
-        DeprecatedPaintLayer::mapRectToPaintInvalidationBacking(this, paintInvalidationContainer, dirtyRect, &paintInvalidationState);
+        const LayoutBoxModelObject& paintInvalidationContainer = paintInvalidationState.paintInvalidationContainer();
+        DeprecatedPaintLayer::mapRectToPaintInvalidationBacking(this, &paintInvalidationContainer, dirtyRect, &paintInvalidationState);
         invalidatePaintUsingContainer(paintInvalidationContainer, dirtyRect, PaintInvalidationFull);
         if (RuntimeEnabledFeatures::slimmingPaintEnabled())
-            invalidateDisplayItemClients(*paintInvalidationContainer);
+            invalidateDisplayItemClients(paintInvalidationContainer);
     }
     LayoutBlock::invalidateTreeIfNeeded(paintInvalidationState);
 }
 
 void LayoutView::invalidatePaintForRectangle(const LayoutRect& paintInvalidationRect, PaintInvalidationReason invalidationReason) const
 {
     ASSERT(!paintInvalidationRect.isEmpty());
 
     if (document().printing() || !m_frameView)
         return;
@@ skipping 582 matching lines @@
     return viewHeight(IncludeScrollbars) / scale;
 }
 
 void LayoutView::willBeDestroyed()
 {
     LayoutBlockFlow::willBeDestroyed();
     m_compositor.clear();
 }
 
 } // namespace blink