Move hoverAncestor() override to LayoutBlockFlow.

third_party/WebKit/Source/core/layout/LayoutBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 1926 matching lines @@
 {
     if (childrenInline())
         return toLayoutBlockFlow(this);
     for (LayoutObject* child = firstChild(); child && !child->isFloatingOrOutOfFlowPositioned() && child->isLayoutBlockFlow(); child = toLayoutBlock(child)->firstChild()) {
         if (child->childrenInline())
             return toLayoutBlockFlow(child);
     }
     return nullptr;
 }
 
-LayoutObject* LayoutBlock::hoverAncestor() const
-{
-    return isAnonymousBlockContinuation() ? continuation() : LayoutBox::hoverAncestor();
-}
-
 void LayoutBlock::updateDragState(bool dragOn)
 {
     LayoutBox::updateDragState(dragOn);
     if (LayoutBoxModelObject* continuation = this->continuation())
         continuation->updateDragState(dragOn);
 }
 
 void LayoutBlock::childBecameNonInline(LayoutObject*)
 {
     makeChildrenNonInline();
@@ skipping 291 matching lines @@
         for (TrackedLayoutBoxListHashSet::const_iterator it = positionedDescendantSet->begin(); it != end; ++it) {
             LayoutBox* currBox = *it;
             ASSERT(!currBox->needsLayout());
         }
     }
 }
 
 #endif
 
 } // namespace blink