Switching CSS Variables over to RuntimeEnabledFeatures

Source/core/page/Settings.h

 /*
  * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 130 matching lines @@
 
     void setFontRenderingMode(FontRenderingMode mode);
     FontRenderingMode fontRenderingMode() const;
 
     void setCSSCustomFilterEnabled(bool enabled) { m_isCSSCustomFilterEnabled = enabled; }
     bool isCSSCustomFilterEnabled() const { return m_isCSSCustomFilterEnabled; }
 
     void setCSSStickyPositionEnabled(bool enabled) { m_cssStickyPositionEnabled = enabled; }
     bool cssStickyPositionEnabled() const { return m_cssStickyPositionEnabled; }
 
-    void setCSSVariablesEnabled(bool enabled) { m_cssVariablesEnabled = enabled; }
-    bool cssVariablesEnabled() const { return m_cssVariablesEnabled; }
-
     static void setMockScrollbarsEnabled(bool flag);
     static bool mockScrollbarsEnabled();
 
     static void setUsesOverlayScrollbars(bool flag);
     static bool usesOverlayScrollbars();
 
     void setTouchEventEmulationEnabled(bool enabled) { m_touchEventEmulationEnabled = enabled; }
     bool isTouchEventEmulationEnabled() const { return m_touchEventEmulationEnabled; }
 
 private:
@@ skipping 20 matching lines @@
     SETTINGS_MEMBER_VARIABLES
 
     bool m_isJavaEnabled : 1;
     bool m_loadsImagesAutomatically : 1;
     bool m_areImagesEnabled : 1;
     bool m_arePluginsEnabled : 1;
     bool m_isScriptEnabled : 1;
     unsigned m_fontRenderingMode : 1;
     bool m_isCSSCustomFilterEnabled : 1;
     bool m_cssStickyPositionEnabled : 1;
-    bool m_cssVariablesEnabled : 1;
     bool m_dnsPrefetchingEnabled : 1;
 
     bool m_touchEventEmulationEnabled : 1;
 
     Timer<Settings> m_setImageLoadingSettingsTimer;
     void imageLoadingSettingsTimerFired(Timer<Settings>*);
 
     static bool gMockScrollbarsEnabled;
     static bool gUsesOverlayScrollbars;
 };
 
 } // namespace WebCore
 
 #endif // Settings_h