Switching CSS Variables over to RuntimeEnabledFeatures

Source/core/page/Settings.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 120 matching lines @@
 #endif
     SETTINGS_INITIALIZER_LIST
     , m_isJavaEnabled(false)
     , m_loadsImagesAutomatically(false)
     , m_areImagesEnabled(true)
     , m_arePluginsEnabled(false)
     , m_isScriptEnabled(false)
     , m_fontRenderingMode(0)
     , m_isCSSCustomFilterEnabled(false)
     , m_cssStickyPositionEnabled(true)
-    , m_cssVariablesEnabled(false)
     , m_dnsPrefetchingEnabled(false)
     , m_touchEventEmulationEnabled(false)
     , m_setImageLoadingSettingsTimer(this, &Settings::imageLoadingSettingsTimerFired)
 {
     // A Frame may not have been created yet, so we initialize the AtomicString
     // hash before trying to use it.
     AtomicString::init();
     initializeDefaultFontFamilies();
     m_page = page; // Page is not yet fully initialized wen constructing Settings, so keeping m_page null over initializeDefaultFontFamilies() call.
 }
@@ skipping 223 matching lines @@
 {
     gUsesOverlayScrollbars = flag;
 }
 
 bool Settings::usesOverlayScrollbars()
 {
     return gUsesOverlayScrollbars;
 }
 
 } // namespace WebCore