Alternate way to track first paint

Source/core/rendering/RenderObjectChildList.cpp

 /*
  * Copyright (C) 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 143 matching lines @@
         setLastChild(newChild);
     }
 
     if (!owner->documentBeingDestroyed() && notifyRenderer)
         newChild->insertedIntoTree();
 
     if (!owner->documentBeingDestroyed()) {
         RenderCounter::rendererSubtreeAttached(newChild);
     }
 
-    newChild->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation();
+    newChild->setNeedsLayoutAndPrefWidthsRecalc();
+    newChild->setShouldDoFullPaintInvalidationWithReason(InvalidationRendererInsertion);
     if (!owner->normalChildNeedsLayout())
         owner->setChildNeedsLayout(); // We may supply the static position for an absolute positioned child.
 
     if (AXObjectCache* cache = owner->document().axObjectCache())
         cache->childrenChanged(owner);
 }
 
 void RenderObjectChildList::invalidatePaintOnRemoval(const RenderObject& oldChild)
 {
     if (!oldChild.isRooted())
         return;
     if (oldChild.isBody()) {
         oldChild.view()->setShouldDoFullPaintInvalidation(true);
         return;
     }
     if (oldChild.isText()) {
         oldChild.parent()->setShouldDoFullPaintInvalidation(true);
         return;
     }
     DisableCompositingQueryAsserts disabler;
     oldChild.invalidatePaintUsingContainer(oldChild.containerForPaintInvalidation(), oldChild.previousPaintInvalidationRect(), InvalidationRendererRemoval);
 }
 
 } // namespace blink