Factor GraphicsLayerUpdater out of RenderLayerCompositor

Source/core/rendering/compositing/CompositedLayerMapping.cpp

Index: Source/core/rendering/compositing/CompositedLayerMapping.cpp
diff --git a/Source/core/rendering/compositing/CompositedLayerMapping.cpp b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
index d4a9d64b93994e0f0309f5a3ca973bce2ff85fa2..6bd26ac5cc4d9cd1a7ba9968e5c8396e28b7e950 100644
--- a/Source/core/rendering/compositing/CompositedLayerMapping.cpp
+++ b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
@@ -49,6 +49,7 @@
 #include "core/rendering/RenderLayerStackingNodeIterator.h"
 #include "core/rendering/RenderVideo.h"
 #include "core/rendering/RenderView.h"
+#include "core/rendering/compositing/GraphicsLayerUpdater.h"
 #include "core/rendering/compositing/RenderLayerCompositor.h"
 #include "core/rendering/style/KeyframeList.h"
 #include "platform/LengthFunctions.h"
@@ -535,7 +536,7 @@ bool CompositedLayerMapping::updateGraphicsLayerConfiguration()
         layerConfigChanged = true;
     }
     if (renderer->isRenderPart())
-        layerConfigChanged = RenderLayerCompositor::parentFrameContentLayers(toRenderPart(renderer));
+        layerConfigChanged = GraphicsLayerUpdater::parentFrameContentLayers(toRenderPart(renderer));
 
     return layerConfigChanged;
 }