Revert of Client side display item cache flag

third_party/WebKit/Source/core/layout/line/InlineBox.cpp

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2007 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 25 matching lines @@
 namespace blink {
 
 class LayoutObject;
 
 struct SameSizeAsInlineBox {
     virtual ~SameSizeAsInlineBox() { }
     void* a[4];
     LayoutPoint b;
     LayoutUnit c;
     uint32_t d : 32;
-    DisplayItemCacheGeneration cacheGeneration;
 #if ENABLE(ASSERT)
     bool f;
 #endif
 };
 
 static_assert(sizeof(InlineBox) == sizeof(SameSizeAsInlineBox), "InlineBox should stay small");
 
 #if ENABLE(ASSERT)
 
 InlineBox::~InlineBox()
@@ skipping 348 matching lines @@
 
 void showLineTree(const blink::InlineBox* b)
 {
     if (b)
         b->showLineTreeForThis();
     else
         fprintf(stderr, "Cannot showLineTree for (nil) InlineBox.\n");
 }
 
 #endif