Use deferred style recalc for non-blocking stylesheets.

Source/core/html/HTMLLinkElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Rob Buis (rwlbuis@gmail.com)
  * 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
@@ skipping 538 matching lines @@
     m_pendingSheetType = None;
 
     if (type == None)
         return;
     if (type == NonBlocking) {
         // Tell StyleEngine to re-compute styleSheets of this m_owner's treescope.
         m_owner->document().styleEngine()->modifiedStyleSheetCandidateNode(m_owner);
         // Document::removePendingSheet() triggers the style selector recalc for blocking sheets.
         // FIXME: We don't have enough knowledge at this point to know if we're adding or removing a sheet
         // so we can't call addedStyleSheet() or removedStyleSheet().
-        m_owner->document().styleResolverChanged(RecalcStyleImmediately);
+        m_owner->document().styleResolverChanged(RecalcStyleDeferred);
         return;
     }
 
     m_owner->document().styleEngine()->removePendingSheet(m_owner,
         notification == RemovePendingSheetNotifyImmediately
         ? StyleEngine::RemovePendingSheetNotifyImmediately
         : StyleEngine::RemovePendingSheetNotifyLater);
 }
 
 void LinkStyle::setDisabledState(bool disabled)
@@ skipping 116 matching lines @@
 void LinkStyle::ownerRemoved()
 {
     if (m_sheet)
         clearSheet();
 
     if (styleSheetIsLoading())
         removePendingSheet(RemovePendingSheetNotifyLater);
 }
 
 } // namespace WebCore