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

Source/core/rendering/RenderEmbeddedObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 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 172 matching lines @@
 
     path.addRoundedRect(replacementTextRect, FloatSize(replacementTextRoundedRectRadius, replacementTextRoundedRectRadius));
 
     return true;
 }
 
 void RenderEmbeddedObject::layout()
 {
     ASSERT(needsLayout());
 
+    setMayNeedInvalidation(true);
+
     updateLogicalWidth();
     updateLogicalHeight();
 
     m_overflow.clear();
     addVisualEffectOverflow();
 
     updateLayerTransform();
 
     if (!widget() && frameView())
         frameView()->addWidgetToUpdate(*this);
@@ skipping 14 matching lines @@
 }
 
 RenderBox* RenderEmbeddedObject::embeddedContentBox() const
 {
     if (!node() || !widget() || !widget()->isFrameView())
         return 0;
     return toFrameView(widget())->embeddedContentBox();
 }
 
 }