Remove hasContentsLayer and isMainFrameRenderViewLayer from CLM

Source/core/rendering/compositing/CompositedLayerMapping.h

Index: Source/core/rendering/compositing/CompositedLayerMapping.h
diff --git a/Source/core/rendering/compositing/CompositedLayerMapping.h b/Source/core/rendering/compositing/CompositedLayerMapping.h
index f1361f98d90c34d60024f8c3d466ce5f329c7b11..7f2d4331e7fc1acfe02e0db8384b1c62481381ee 100644
--- a/Source/core/rendering/compositing/CompositedLayerMapping.h
+++ b/Source/core/rendering/compositing/CompositedLayerMapping.h
@@ -90,7 +90,6 @@ public:
     bool hasAncestorClippingLayer() const { return m_ancestorClippingLayer; }
     GraphicsLayer* ancestorClippingLayer() const { return m_ancestorClippingLayer.get(); }
 
-    bool hasContentsLayer() const { return m_foregroundLayer; }
     GraphicsLayer* foregroundLayer() const { return m_foregroundLayer.get(); }
 
     GraphicsLayer* backgroundLayer() const { return m_backgroundLayer.get(); }
@@ -273,8 +272,6 @@ private:
     // Return the opacity value that this layer should use for compositing.
     float compositingOpacity(float rendererOpacity) const;
 
-    bool isMainFrameRenderViewLayer() const;
-
     bool paintsChildren() const;
 
     // Returns true if this layer has content that needs to be rendered by painting into the backing store.