Delete unused paint invalidation function.

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 2048 matching lines @@
 
 bool RenderObject::canUpdateSelectionOnRootLineBoxes()
 {
     if (needsLayout())
         return false;
 
     RenderBlock* containingBlock = this->containingBlock();
     return containingBlock ? !containingBlock->needsLayout() : false;
 }
 
-// Returns the smallest rectangle enclosing all of the painted content
-// respecting clipping, masking, filters, opacity, stroke-width and markers
-FloatRect RenderObject::paintInvalidationRectInLocalCoordinates() const
-{
-    ASSERT_NOT_REACHED();
-    return FloatRect();
-}
-
 bool RenderObject::nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint&, HitTestAction)
 {
     ASSERT_NOT_REACHED();
     return false;
 }
 
 bool RenderObject::isRelayoutBoundaryForInspector() const
 {
     return objectIsRelayoutBoundary(this);
 }
@@ skipping 33 matching lines @@
 {
     if (object1) {
         const blink::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif