Revert commit# 415577 "Add grid/flex layout support for <fieldset>"

third_party/WebKit/Source/core/layout/LayoutObject.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 2682 matching lines @@
 
 void LayoutObject::destroyAndCleanupAnonymousWrappers() {
   // If the tree is destroyed, there is no need for a clean-up phase.
   if (documentBeingDestroyed()) {
     destroy();
     return;
   }
 
   LayoutObject* destroyRoot = this;
   for (LayoutObject *destroyRootParent = destroyRoot->parent();
-       destroyRootParent && destroyRootParent->isAnonymous() &&
-       !destroyRootParent->parent()->createsAnonymousWrapper();
+       destroyRootParent && destroyRootParent->isAnonymous();
        destroyRoot = destroyRootParent,
                     destroyRootParent = destroyRootParent->parent()) {
     // Anonymous block continuations are tracked and destroyed elsewhere (see the bottom of LayoutBlock::removeChild)
     if (destroyRootParent->isLayoutBlockFlow() &&
         toLayoutBlockFlow(destroyRootParent)->isAnonymousBlockContinuation())
       break;
     // A flow thread is tracked by its containing block. Whether its children are removed or not is irrelevant.
     if (destroyRootParent->isLayoutFlowThread())
       break;
 
@@ skipping 739 matching lines @@
     const blink::LayoutObject* root = object1;
     while (root->parent())
       root = root->parent();
     root->showLayoutTreeAndMark(object1, "*", object2, "-", 0);
   } else {
     WTFLogAlways("%s", "Cannot showLayoutTree. Root is (nil)");
   }
 }
 
 #endif