Remove codes related to scaling in GraphicsLayer tree.

Source/core/platform/graphics/GraphicsLayer.cpp

Index: Source/core/platform/graphics/GraphicsLayer.cpp
diff --git a/Source/core/platform/graphics/GraphicsLayer.cpp b/Source/core/platform/graphics/GraphicsLayer.cpp
index f6789b8a2ddfcac91b30e7046488035e593214f2..cbccc1fcbe8a114eaf10eb1a49a2ce8c274992f3 100644
--- a/Source/core/platform/graphics/GraphicsLayer.cpp
+++ b/Source/core/platform/graphics/GraphicsLayer.cpp
@@ -114,7 +114,6 @@ GraphicsLayer::GraphicsLayer(GraphicsLayerClient* client)
     , m_masksToBounds(false)
     , m_drawsContent(false)
     , m_contentsVisible(true)
-    , m_maintainsPixelAlignment(false)
     , m_showDebugBorder(false)
     , m_showRepaintCounter(false)
     , m_paintingPhase(GraphicsLayerPaintAllWithOverflowClip)
@@ -327,22 +326,6 @@ void GraphicsLayer::removeFromParent()
     platformLayer()->removeFromParent();
 }
 
-void GraphicsLayer::noteDeviceOrPageScaleFactorChangedIncludingDescendants()
-{
-    deviceOrPageScaleFactorChanged();
-
-    if (m_maskLayer)
-        m_maskLayer->deviceOrPageScaleFactorChanged();
-
-    if (m_replicaLayer)
-        m_replicaLayer->noteDeviceOrPageScaleFactorChangedIncludingDescendants();
-
-    const Vector<GraphicsLayer*>& childLayers = children();
-    size_t numChildren = childLayers.size();
-    for (size_t i = 0; i < numChildren; ++i)
-        childLayers[i]->noteDeviceOrPageScaleFactorChangedIncludingDescendants();
-}
-
 void GraphicsLayer::setReplicatedByLayer(GraphicsLayer* layer)
 {
     // FIXME: this could probably be a full early exit.