Enable sticky positioning for table elements.

Source/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 815 matching lines @@
                 break;
 
             if (o->style()->hasInFlowPosition() && o->isInline() && !o->isReplaced()) {
                 o = o->containingBlock();
                 break;
             }
 
             o = o->parent();
         }
 
+        if (o && !o->isRenderBlock())
+            o = o->containingBlock();
+
         while (o && o->isAnonymousBlock())
             o = o->containingBlock();
     } else {
         while (o && ((o->isInline() && !o->isReplaced()) || !o->isRenderBlock()))
             o = o->parent();
     }
 
     if (!o || !o->isRenderBlock())
         return 0; // This can still happen in case of an orphaned tree
 
@@ skipping 2541 matching lines @@
 {
     if (object1) {
         const WebCore::RenderObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
     }
 }
 
 #endif