Remove left-over PageCache stuff

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 121 matching lines @@
 
         void setPluginsEnabled(bool);
         bool arePluginsEnabled() const { return m_arePluginsEnabled; }
 
         void setDNSPrefetchingEnabled(bool);
         bool dnsPrefetchingEnabled() const { return m_dnsPrefetchingEnabled; }
 
         void setUserStyleSheetLocation(const KURL&);
         const KURL& userStyleSheetLocation() const { return m_userStyleSheetLocation; }
 
-        // FIXME: Remove these, PageCache is dead.
-        void setUsesPageCache(bool) { }
-        bool usesPageCache() const { return false; }
-        
         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; }
@@ skipping 51 matching lines @@
         static bool gUsesOverlayScrollbars;
 
 #if USE(SAFARI_THEME)
         static bool gShouldPaintNativeControls;
 #endif
     };
 
 } // namespace WebCore
 
 #endif // Settings_h