Do not block painting for in-body CSS

third_party/WebKit/Source/core/html/HTMLLinkElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Google 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 10 matching lines @@
  *
  */
 
 #ifndef HTMLLinkElement_h
 #define HTMLLinkElement_h
 
 #include "core/CoreExport.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/dom/DOMTokenList.h"
 #include "core/dom/IconURL.h"
+#include "core/dom/StyleEngineContext.h"
 #include "core/fetch/ResourceOwner.h"
 #include "core/fetch/StyleSheetResource.h"
 #include "core/fetch/StyleSheetResourceClient.h"
 #include "core/html/HTMLElement.h"
 #include "core/html/LinkRelAttribute.h"
 #include "core/html/LinkResource.h"
 #include "core/html/RelList.h"
 #include "core/loader/LinkLoader.h"
 #include "core/loader/LinkLoaderClient.h"
 
@@ skipping 73 matching lines @@
         m_fetchFollowingCORS = true;
     }
     void clearFetchFollowingCORS()
     {
         m_fetchFollowingCORS = false;
     }
 
     Member<CSSStyleSheet> m_sheet;
     DisabledState m_disabledState;
     PendingSheetType m_pendingSheetType;
+    StyleEngineContext m_styleEngineContext;
     bool m_loading;
     bool m_firedLoad;
     bool m_loadedSheet;
     bool m_fetchFollowingCORS;
 };
 
 
 class CORE_EXPORT HTMLLinkElement final : public HTMLElement, public LinkLoaderClient, private DOMTokenListObserver {
     DEFINE_WRAPPERTYPEINFO();
     USING_GARBAGE_COLLECTED_MIXIN(HTMLLinkElement);
@@ skipping 95 matching lines @@
     LinkRelAttribute m_relAttribute;
     String m_scope;
 
     bool m_createdByParser;
     bool m_isInShadowTree;
 };
 
 } // namespace blink
 
 #endif // HTMLLinkElement_h