LayoutBlock::removeChild() override no longer needed.

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 626 matching lines @@
         return;
     parent->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(LayoutInvalidationReason::ChildAnonymousBlockChanged);
 
     child->moveAllChildrenTo(parent, child->nextSibling(), child->hasLayer());
     parent->setChildrenInline(child->childrenInline());
 
     parent->children()->removeChildNode(parent, child, child->hasLayer());
     child->destroy();
 }
 
-void LayoutBlock::removeChild(LayoutObject* oldChild)
-{
-    // No need to waste time in merging or removing empty anonymous blocks.
-    // We can just bail out if our document is getting destroyed.
-    if (documentBeingDestroyed()) {
-        LayoutBox::removeChild(oldChild);
-        return;
-    }
-
-    // If this child is a block, and if our previous and next siblings are
-    // both anonymous blocks with inline content, then we can go ahead and
-    // fold the inline content back together.
-    LayoutObject* prev = oldChild->previousSibling();
-    LayoutObject* next = oldChild->nextSibling();
-    bool mergedAnonymousBlocks = false;
-    if (prev && next && !oldChild->isInline() && !oldChild->virtualContinuation() && prev->isLayoutBlockFlow() && next->isLayoutBlockFlow()) {
-        if (toLayoutBlockFlow(prev)->mergeSiblingContiguousAnonymousBlock(toLayoutBlockFlow(next))) {
-            mergedAnonymousBlocks = true;
-            next = nullptr;
-        }
-    }
-
-    LayoutBox::removeChild(oldChild);
-
-    LayoutObject* child = prev ? prev : next;
-    if (mergedAnonymousBlocks && child && !child->previousSibling() && !child->nextSibling()) {
-        // The removal has knocked us down to containing only a single anonymous
-        // box.  We can go ahead and pull the content right back up into our
-        // box.
-        collapseAnonymousBlockChild(this, toLayoutBlock(child));
-    }
-}
-
 void LayoutBlock::startDelayUpdateScrollInfo()
 {
     if (gDelayUpdateScrollInfo == 0) {
         ASSERT(!gDelayedUpdateScrollInfoSet);
         gDelayedUpdateScrollInfoSet = new DelayedUpdateScrollInfoSet;
     }
     ASSERT(gDelayedUpdateScrollInfoSet);
     ++gDelayUpdateScrollInfo;
 }
 
@@ skipping 1553 matching lines @@
         for (TrackedLayoutBoxListHashSet::const_iterator it = positionedDescendantSet->begin(); it != end; ++it) {
             LayoutBox* currBox = *it;
             ASSERT(!currBox->needsLayout());
         }
     }
 }
 
 #endif
 
 } // namespace blink