Simplify RenderLayer's handling of filters.

sky/engine/core/frame/FrameView.h

 /*
    Copyright (C) 1997 Martin Jones (mjones@kde.org)
              (C) 1998 Waldo Bastian (bastian@kde.org)
              (C) 1998, 1999 Torben Weis (weis@kde.org)
              (C) 1999 Lars Knoll (knoll@kde.org)
              (C) 1999 Antti Koivisto (koivisto@kde.org)
    Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
@@ skipping 130 matching lines @@
     IntPoint convertFromRenderer(const RenderObject&, const IntPoint&) const;
     IntPoint convertToRenderer(const RenderObject&, const IntPoint&) const;
 
     bool shouldSetCursor() const;
 
     void setCursor(const Cursor&);
 
     // FIXME: Remove this method once plugin loading is decoupled from layout.
     void flushAnyPendingPostLayoutTasks();
 
-    void setHasSoftwareFilters(bool hasSoftwareFilters) { m_hasSoftwareFilters = hasSoftwareFilters; }
-    bool hasSoftwareFilters() const { return m_hasSoftwareFilters; }
-
     bool isActive() const;
 
     // FIXME: This should probably be renamed as the 'inSubtreeLayout' parameter
     // passed around the FrameView layout methods can be true while this returns
     // false.
     bool isSubtreeLayout() const { return !!m_layoutSubtreeRoot; }
 
     // FIXME(sky): remove
     IntPoint windowToContents(const IntPoint& windowPoint) const { return windowPoint; }
     IntPoint contentsToWindow(const IntPoint& contentsPoint) const { return contentsPoint; }
@@ skipping 79 matching lines @@
     bool m_layoutSizeFixedToFrameSize;
 
     Vector<IntRect> m_tickmarks;
 };
 
 DEFINE_TYPE_CASTS(FrameView, Widget, widget, widget->isFrameView(), widget.isFrameView());
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_FRAME_FRAMEVIEW_H_