Merge 135082 - REGRESSION(r129644): User StyleSheet not applying

Source/WebCore/dom/Document.cpp

 /*
  * 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, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 776 matching lines @@
 {
     if (!m_mediaQueryMatcher)
         m_mediaQueryMatcher = MediaQueryMatcher::create(this);
     return m_mediaQueryMatcher.get();
 }
 
 void Document::setCompatibilityMode(CompatibilityMode mode)
 {
     if (m_compatibilityModeLocked || mode == m_compatibilityMode)
         return;
-    ASSERT(m_styleSheetCollection->activeAuthorStyleSheets().isEmpty());
     bool wasInQuirksMode = inQuirksMode();
     m_compatibilityMode = mode;
     selectorQueryCache()->invalidate();
     if (inQuirksMode() != wasInQuirksMode) {
         // All user stylesheets have to reparse using the different mode.
         m_styleSheetCollection->clearPageUserSheet();
-        m_styleSheetCollection->clearPageGroupUserSheets();
+        m_styleSheetCollection->invalidateInjectedStyleSheetCache();
     }
 }
 
 String Document::compatMode() const
 {
     return inQuirksMode() ? "BackCompat" : "CSS1Compat";
 }
 
 void Document::resetLinkColor()
 {
@@ skipping 5225 matching lines @@
     AtomicString localeKey = locale;
     if (locale.isEmpty() || !RuntimeEnabledFeatures::langAttributeAwareFormControlUIEnabled())
         localeKey = defaultLanguage();
     LocaleIdentifierToLocaleMap::AddResult result = m_localeCache.add(localeKey, nullptr);
     if (result.isNewEntry)
         result.iterator->value = Locale::create(localeKey);
     return *(result.iterator->value);
 }
 
 } // namespace WebCore