Do not block painting for in-body CSS

third_party/WebKit/Source/core/dom/StyleElement.cpp

 /*
  * Copyright (C) 2006, 2007 Rob Buis
  * Copyright (C) 2008 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,
@@ skipping 128 matching lines @@
     if (!element || !element->inShadowIncludingDocument())
         return ProcessingSuccessful;
     return createSheet(element, element->textFromChildren());
 }
 
 void StyleElement::clearSheet(Element* ownerElement)
 {
     DCHECK(m_sheet);
 
     if (ownerElement && m_sheet->isLoading())
-        ownerElement->document().styleEngine().removePendingSheet(ownerElement);
+        ownerElement->document().styleEngine().removePendingSheet(ownerElement, m_styleEngineContext);
 
     m_sheet.release()->clearOwnerNode();
 }
 
 static bool shouldBypassMainWorldCSP(Element* element)
 {
     // Main world CSP is bypassed within an isolated world.
     LocalFrame* frame = element->document().frame();
     if (frame && frame->script().shouldBypassMainWorldCSP())
         return true;
@@ skipping 24 matching lines @@
     // If type is empty or CSS, this is a CSS style sheet.
     const AtomicString& type = this->type();
     if (isCSS(e, type) && passesContentSecurityPolicyChecks) {
         MediaQuerySet* mediaQueries = MediaQuerySet::create(media());
 
         MediaQueryEvaluator screenEval("screen", true);
         MediaQueryEvaluator printEval("print", true);
         if (screenEval.eval(mediaQueries) || printEval.eval(mediaQueries)) {
             m_loading = true;
             TextPosition startPosition = m_startPosition == TextPosition::belowRangePosition() ? TextPosition::minimumPosition() : m_startPosition;
-            newSheet = document.styleEngine().createSheet(e, text, startPosition);
+            newSheet = document.styleEngine().createSheet(e, text, startPosition, m_styleEngineContext);
             newSheet->setMediaQueries(mediaQueries);
             m_loading = false;
         }
     }
 
     if (m_sheet)
         clearSheet(e);
 
     m_sheet = newSheet;
     if (m_sheet)
         m_sheet->contents()->checkLoaded();
 
     return passesContentSecurityPolicyChecks ? ProcessingSuccessful : ProcessingFatalError;
 }
 
 bool StyleElement::isLoading() const
 {
     if (m_loading)
         return true;
     return m_sheet ? m_sheet->isLoading() : false;
 }
 
 bool StyleElement::sheetLoaded(Document& document)
 {
     if (isLoading())
         return false;
 
-    document.styleEngine().removePendingSheet(m_sheet->ownerNode());
+    document.styleEngine().removePendingSheet(m_sheet->ownerNode(), m_styleEngineContext);
     return true;
 }
 
 void StyleElement::startLoadingDynamicSheet(Document& document)
 {
-    document.styleEngine().addPendingSheet();
+    document.styleEngine().addPendingSheet(m_styleEngineContext);
 }
 
 DEFINE_TRACE(StyleElement)
 {
     visitor->trace(m_sheet);
 }
 
 } // namespace blink