Mark when we may have been invalidated to early out on repaintTreeAfterLayout.

Source/core/rendering/RenderReplaced.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011-2012. 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 65 matching lines @@
     if (style() && style()->effectiveZoom() != oldZoom)
         intrinsicSizeChanged();
 }
 
 void RenderReplaced::layout()
 {
     ASSERT(needsLayout());
 
     LayoutRepainter repainter(*this, checkForRepaintDuringLayout());
 
+    setMayNeedInvalidation(true);
     setHeight(minimumReplacedHeight());
 
     updateLogicalWidth();
     updateLogicalHeight();
 
     m_overflow.clear();
     addVisualEffectOverflow();
     updateLayerTransform();
     invalidateBackgroundObscurationStatus();
 
@@ skipping 520 matching lines @@
         // FIXME: layoutDelta needs to be applied in parts before/after transforms and
         // repaint containers. https://bugs.webkit.org/show_bug.cgi?id=23308
         r.move(v->layoutDelta());
     }
 
     computeRectForRepaint(repaintContainer, r);
     return r;
 }
 
 }