Make siblingRules and uncommonAttributeRules private.

third_party/WebKit/Source/core/css/CSSDefaultStyleSheets.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
@@ skipping 141 matching lines @@
       (isHTMLVideoElement(element) || isHTMLAudioElement(element))) {
     String mediaRules = loadResourceAsASCIIString("mediaControls.css") +
                         LayoutTheme::theme().extraMediaControlsStyleSheet();
     m_mediaControlsStyleSheet = parseUASheet(mediaRules);
     m_defaultStyle->addRulesFromSheet(mediaControlsStyleSheet(), screenEval());
     m_defaultPrintStyle->addRulesFromSheet(mediaControlsStyleSheet(),
                                            printEval());
     changedDefaultStyle = true;
   }
 
-  ASSERT(!m_defaultStyle->features().hasIdsInSelectors());
-  ASSERT(m_defaultStyle->features().siblingRules.isEmpty());
+  DCHECK(!m_defaultStyle->features().hasIdsInSelectors());
+  DCHECK(!m_defaultStyle->features().usesSiblingRules());
   return changedDefaultStyle;
 }
 
 void CSSDefaultStyleSheets::ensureDefaultStyleSheetForFullscreen() {
   if (m_fullscreenStyleSheet)
     return;
 
   String fullscreenRules = loadResourceAsASCIIString("fullscreen.css") +
                            LayoutTheme::theme().extraFullscreenStyleSheet();
   m_fullscreenStyleSheet = parseUASheet(fullscreenRules);
@@ skipping 11 matching lines @@
   visitor->trace(m_televisionViewportStyleSheet);
   visitor->trace(m_xhtmlMobileProfileStyleSheet);
   visitor->trace(m_quirksStyleSheet);
   visitor->trace(m_svgStyleSheet);
   visitor->trace(m_mathmlStyleSheet);
   visitor->trace(m_mediaControlsStyleSheet);
   visitor->trace(m_fullscreenStyleSheet);
 }
 
 }  // namespace blink