Do not block painting for in-body CSS

third_party/WebKit/Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 356 matching lines @@
     bool isMobileDocument() const { return m_isMobileDocument; }
 
     StyleResolver* styleResolver() const;
     StyleResolver& ensureStyleResolver() const;
 
     bool isViewSource() const { return m_isViewSource; }
     void setIsViewSource(bool);
 
     bool sawElementsInKnownNamespaces() const { return m_sawElementsInKnownNamespaces; }
 
-    bool isRenderingReady() const { return haveImportsLoaded() && haveStylesheetsLoaded(); }
-    bool isScriptExecutionReady() const { return isRenderingReady(); }
+    bool isRenderingReady() const { return haveImportsLoaded() && haveRenderBlockingStylesheetsLoaded(); }
+    bool isScriptExecutionReady() const { return haveImportsLoaded() && haveStylesheetsLoaded(); }
 
     // This is a DOM function.
     StyleSheetList& styleSheets();
 
     StyleEngine& styleEngine() { DCHECK(m_styleEngine.get()); return *m_styleEngine.get(); }
 
     bool gotoAnchorNeededAfterStylesheetsLoad() { return m_gotoAnchorNeededAfterStylesheetsLoad; }
     void setGotoAnchorNeededAfterStylesheetsLoad(bool b) { m_gotoAnchorNeededAfterStylesheetsLoad = b; }
 
     void scheduleUseShadowTreeUpdate(SVGUseElement&);
@@ skipping 756 matching lines @@
 
     void addListenerType(ListenerType listenerType) { m_listenerTypes |= listenerType; }
     void addMutationEventListenerTypeIfEnabled(ListenerType);
 
     void didAssociateFormControlsTimerFired(Timer<Document>*);
 
     void clearFocusedElementSoon();
     void clearFocusedElementTimerFired(Timer<Document>*);
 
     bool haveStylesheetsLoaded() const;
+    bool haveRenderBlockingStylesheetsLoaded() const;
     void styleResolverMayHaveChanged();
 
     void setHoverNode(Node*);
 
     using EventFactorySet = HashSet<OwnPtr<EventFactoryBase>>;
     static EventFactorySet& eventFactories();
 
     void setNthIndexCache(NthIndexCache* nthIndexCache) { DCHECK(!m_nthIndexCache || !nthIndexCache); m_nthIndexCache = nthIndexCache; }
 
     const OriginAccessEntry& accessEntryFromURL();
@@ skipping 268 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif // Document_h