Update from https://crrev.com/308331

sky/engine/platform/graphics/GraphicsContext.h

Index: sky/engine/platform/graphics/GraphicsContext.h
diff --git a/sky/engine/platform/graphics/GraphicsContext.h b/sky/engine/platform/graphics/GraphicsContext.h
index 6f59a2f26033592d8c58c04c2ef2847b681b7c60..782fa23e84d2488cbb9450ec9662462673de5d07 100644
--- a/sky/engine/platform/graphics/GraphicsContext.h
+++ b/sky/engine/platform/graphics/GraphicsContext.h
@@ -325,9 +325,6 @@ public:
     void beginLayer(float opacity, CompositeOperator, const FloatRect* = 0, ColorFilter = ColorFilterNone, ImageFilter* = 0);
     void endLayer();
 
-    void beginCull(const FloatRect&);
-    void endCull();
-
     // Instead of being dispatched to the active canvas, draw commands following beginRecording()
     // are stored in a display list that can be replayed at a later time.
     void beginRecording(const FloatRect& bounds);