Remove some unused paint invalidation members from RenderObject.

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 81 matching lines @@
 struct SameSizeAsRenderObject {
     virtual ~SameSizeAsRenderObject() { } // Allocate vtable pointer.
     void* pointers[5];
 #if ENABLE(ASSERT)
     unsigned m_debugBitfields : 2;
 #if ENABLE(OILPAN)
     unsigned m_oilpanBitfields : 1;
 #endif
 #endif
     unsigned m_bitfields;
-    LayoutRect rect; // Stores the previous paint invalidation rect.
-    LayoutPoint position; // Stores the previous position from the paint invalidation container.
 };
 
 COMPILE_ASSERT(sizeof(RenderObject) == sizeof(SameSizeAsRenderObject), RenderObject_should_stay_small);
 
 bool RenderObject::s_affectsParentBlock = false;
 
 #if !ENABLE(OILPAN)
 void* RenderObject::operator new(size_t sz)
 {
     ASSERT(isMainThread());
@@ skipping 2008 matching lines @@
 {
     if (object1) {
         const blink::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif