Move and rename RenderPart to LayoutPart.

Source/core/layout/compositing/LayerCompositor.h

Index: Source/core/layout/compositing/LayerCompositor.h
diff --git a/Source/core/layout/compositing/LayerCompositor.h b/Source/core/layout/compositing/LayerCompositor.h
index ce069c786c75cc8c70082302bafb22ca128edad7..f5f8b6e71c0419cdc6e9b75fa9597e5ec5af0ce8 100644
--- a/Source/core/layout/compositing/LayerCompositor.h
+++ b/Source/core/layout/compositing/LayerCompositor.h
@@ -37,7 +37,7 @@ class DocumentLifecycle;
 class GraphicsLayer;
 class GraphicsLayerFactory;
 class Page;
-class RenderPart;
+class LayoutPart;
 class ScrollingCoordinator;
 
 enum CompositingUpdateType {
@@ -132,9 +132,9 @@ public:
 
     void setIsInWindow(bool);
 
-    static LayerCompositor* frameContentsCompositor(RenderPart*);
+    static LayerCompositor* frameContentsCompositor(LayoutPart*);
     // Return true if the layers changed.
-    static bool parentFrameContentLayers(RenderPart*);
+    static bool parentFrameContentLayers(LayoutPart*);
 
     // Update the geometry of the layers used for clipping and scrolling in frames.
     void frameViewDidChangeLocation(const IntPoint& contentsOffset);