Remove codes related to scaling in GraphicsLayer tree.

Source/core/rendering/RenderLayerBacking.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 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 117 matching lines @@
     if (Page* page = renderer()->frame()->page())
         graphicsLayerFactory = page->chrome()->client()->graphicsLayerFactory();
 
     OwnPtr<GraphicsLayer> graphicsLayer = GraphicsLayer::create(graphicsLayerFactory, this);
 
 #ifndef NDEBUG
     graphicsLayer->setName(name);
 #else
     UNUSED_PARAM(name);
 #endif
-    graphicsLayer->setMaintainsPixelAlignment(compositor()->keepLayersPixelAligned());
     
     return graphicsLayer.release();
 }
 
 void RenderLayerBacking::updateDebugIndicators(bool showBorder, bool showRepaintCounter)
 {
     m_graphicsLayer->setShowDebugBorder(showBorder);
     m_graphicsLayer->setShowRepaintCounter(showRepaintCounter);
     
     if (m_ancestorClippingLayer)
@@ skipping 1525 matching lines @@
         m_owningLayer->paintScrollCorner(&context, IntPoint(), transformedClip);
         m_owningLayer->paintResizer(&context, IntPoint(), transformedClip);
         context.restore();
     }
 #ifndef NDEBUG
     if (Page* page = renderer()->frame()->page())
         page->setIsPainting(false);
 #endif
 }
 
-float RenderLayerBacking::pageScaleFactor() const
-{
-    return compositor()->pageScaleFactor();
-}
-
-float RenderLayerBacking::deviceScaleFactor() const
-{
-    return compositor()->deviceScaleFactor();
-}
-
 void RenderLayerBacking::didCommitChangesForLayer(const GraphicsLayer* layer) const
 {
 }
 
 bool RenderLayerBacking::getCurrentTransform(const GraphicsLayer* graphicsLayer, TransformationMatrix& transform) const
 {
     GraphicsLayer* transformedLayer = m_contentsContainmentLayer.get() ? m_contentsContainmentLayer.get() : m_graphicsLayer.get();
     if (graphicsLayer != transformedLayer)
         return false;
 
@@ skipping 260 matching lines @@
     info.addMember(m_childContainmentLayer, "childContainmentLayer");
     info.addMember(m_maskLayer, "maskLayer");
     info.addMember(m_layerForHorizontalScrollbar, "layerForHorizontalScrollbar");
     info.addMember(m_layerForVerticalScrollbar, "layerForVerticalScrollbar");
     info.addMember(m_layerForScrollCorner, "layerForScrollCorner");
     info.addMember(m_scrollingLayer, "scrollingLayer");
     info.addMember(m_scrollingContentsLayer, "scrollingContentsLayer");
 }
 
 } // namespace WebCore