Delete selection paint invalidation code.

sky/engine/core/rendering/RenderObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1087 matching lines @@
 }
 
 const RenderLayerModelObject* RenderObject::adjustCompositedContainerForSpecialAncestors(const RenderLayerModelObject* paintInvalidationContainer) const
 {
     // FIXME(sky): We shouldn't have any special ancestors and we don't have composited containers
     if (paintInvalidationContainer)
         return paintInvalidationContainer;
     return view();
 }
 
-void RenderObject::mapRectToPaintInvalidationBacking(const RenderLayerModelObject* paintInvalidationContainer, LayoutRect& rect, const PaintInvalidationState* paintInvalidationState) const
-{
-    if (paintInvalidationContainer == this)
-        return;
-
-    if (RenderObject* o = parent()) {
-        if (o->hasOverflowClip()) {
-            RenderBox* boxParent = toRenderBox(o);
-            boxParent->applyCachedClipAndScrollOffsetForPaintInvalidation(rect);
-            if (rect.isEmpty())
-                return;
-        }
-
-        o->mapRectToPaintInvalidationBacking(paintInvalidationContainer, rect, paintInvalidationState);
-    }
-}
-
 void RenderObject::dirtyLinesFromChangedChild(RenderObject*)
 {
 }
 
 #ifndef NDEBUG
 
 void RenderObject::showTreeForThis() const
 {
     if (node())
         node()->showTreeForThis();
@@ skipping 1014 matching lines @@
 {
     if (object1) {
         const blink::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif