Remove parserInsertBefore.

sky/engine/core/html/parser/HTMLConstructionSite.h

 /*
  * Copyright (C) 2010 Google, Inc. All Rights Reserved.
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 35 matching lines @@
     };
 
     explicit HTMLConstructionSiteTask(Operation op)
         : operation(op)
         , selfClosing(false)
     {
     }
 
     Operation operation;
     RefPtr<ContainerNode> parent;
-    RefPtr<Node> nextChild;
     RefPtr<Node> child;
     bool selfClosing;
 };
 
 } // namespace blink
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::HTMLConstructionSiteTask);
 
 namespace blink {
 
@@ skipping 79 matching lines @@
     TaskQueue m_taskQueue;
 
     class PendingText {
         DISALLOW_ALLOCATION();
     public:
         PendingText()
             : whitespaceMode(WhitespaceUnknown)
         {
         }
 
-        void append(PassRefPtr<ContainerNode> newParent, PassRefPtr<Node> newNextChild, const String& newString, WhitespaceMode newWhitespaceMode)
+        void append(PassRefPtr<ContainerNode> newParent, const String& newString, WhitespaceMode newWhitespaceMode)
         {
             ASSERT(!parent || parent == newParent);
             parent = newParent;
-            ASSERT(!nextChild || nextChild == newNextChild);
-            nextChild = newNextChild;
             stringBuilder.append(newString);
             whitespaceMode = std::min(whitespaceMode, newWhitespaceMode);
         }
 
         void swap(PendingText& other)
         {
             std::swap(whitespaceMode, other.whitespaceMode);
             parent.swap(other.parent);
-            nextChild.swap(other.nextChild);
             stringBuilder.swap(other.stringBuilder);
         }
 
         void discard()
         {
             PendingText discardedText;
             swap(discardedText);
         }
 
         bool isEmpty()
@@ skipping 10 matching lines @@
         StringBuilder stringBuilder;
         WhitespaceMode whitespaceMode;
     };
 
     PendingText m_pendingText;
 };
 
 } // namespace blink
 
 #endif