[WeakMemoryCache] Remove LRU lists, prune order control and live/dead distinction

third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller (mueller@kde.org)
     Copyright (C) 2002 Waldo Bastian (bastian@kde.org)
     Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
     Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
 
     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 184 matching lines @@
   }
 
   DCHECK(m_parsedStyleSheetCache->isCacheableForResource());
   DCHECK(m_parsedStyleSheetCache->isReferencedFromResource());
 
   // Contexts must be identical so we know we would get the same exact result if
   // we parsed again.
   if (m_parsedStyleSheetCache->parserContext() != context)
     return nullptr;
 
-  didAccessDecodedData();
-
   return m_parsedStyleSheetCache;
 }
 
 void CSSStyleSheetResource::saveParsedStyleSheet(StyleSheetContents* sheet) {
   DCHECK(sheet);
   DCHECK(sheet->isCacheableForResource());
 
   if (!memoryCache()->contains(this)) {
     // This stylesheet resource did conflict with another resource and was not
     // added to the cache.
@@ skipping 10 matching lines @@
 }
 
 void CSSStyleSheetResource::updateDecodedSize() {
   size_t decodedSize = m_decodedSheetText.charactersSizeInBytes();
   if (m_parsedStyleSheetCache)
     decodedSize += m_parsedStyleSheetCache->estimatedSizeInBytes();
   setDecodedSize(decodedSize);
 }
 
 }  // namespace blink