Remove LayoutBlock::deleteLineBoxTree().

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 419 matching lines @@
     middleBlock->setContinuation(cloneInline);
 
     // Now take all of the children from |beforeChild| to the end and remove
     // them from |this| and place them in the clone.
     moveChildrenToIgnoringContinuation(cloneInline, beforeChild);
 }
 
 void LayoutInline::splitFlow(LayoutObject* beforeChild, LayoutBlock* newBlockBox,
     LayoutObject* newChild, LayoutBoxModelObject* oldCont)
 {
+    LayoutBlockFlow* containingBlockFlow = toLayoutBlockFlow(containingBlock());
     LayoutBlock* pre = nullptr;
-    LayoutBlock* block = containingBlock();
+    LayoutBlock* block = containingBlockFlow;
 
     // Delete our line boxes before we do the inline split into continuations.
-    block->deleteLineBoxTree();
+    containingBlockFlow->deleteLineBoxTree();
 
     bool madeNewBeforeBlock = false;
     if (block->isAnonymousBlock() && (!block->parent() || !block->parent()->createsAnonymousWrapper())) {
         // We can reuse this block and make it the preBlock of the next continuation.
-        pre = block;
-        pre->removePositionedObjects(nullptr);
-        if (pre->isLayoutBlockFlow())
-            toLayoutBlockFlow(pre)->removeFloatingObjects();
+        containingBlockFlow->removePositionedObjects(nullptr);
+        containingBlockFlow->removeFloatingObjects();
+        pre = containingBlockFlow;
         block = block->containingBlock();
     } else {
         // No anonymous block available for use.  Make one.
         pre = block->createAnonymousBlock();
         madeNewBeforeBlock = true;
     }
 
     LayoutBlock* post = toLayoutBlock(pre->createAnonymousBoxWithSameTypeAs(block));
 
     LayoutObject* boxFirst = madeNewBeforeBlock ? block->firstChild() : pre->nextSibling();
@@ skipping 897 matching lines @@
 
 void LayoutInline::invalidateDisplayItemClients(const LayoutBoxModelObject& paintInvalidationContainer, PaintInvalidationReason invalidationReason) const
 {
     LayoutBoxModelObject::invalidateDisplayItemClients(paintInvalidationContainer, invalidationReason);
 
     for (InlineFlowBox* box = firstLineBox(); box; box = box->nextLineBox())
         paintInvalidationContainer.invalidateDisplayItemClientOnBacking(*box, invalidationReason);
 }
 
 } // namespace blink