Add a separate call to initialize the bounds for a sky <iframe> element.

sky/engine/core/rendering/RenderRemote.h

Index: sky/engine/core/rendering/RenderRemote.h
diff --git a/sky/engine/core/rendering/RenderRemote.h b/sky/engine/core/rendering/RenderRemote.h
index 08221160047e7fb7c51d87cfa09924b7572a6412..649a4d97b577ed45c75f4c0bd93ca9f1a49f509f 100644
--- a/sky/engine/core/rendering/RenderRemote.h
+++ b/sky/engine/core/rendering/RenderRemote.h
@@ -16,9 +16,12 @@ public:
     explicit RenderRemote(HTMLIFrameElement*);
     virtual ~RenderRemote();
 
+protected:
+    void layout() override;
+
 private:
-    virtual LayerType layerTypeRequired() const override { return NormalLayer; }
-    virtual void paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset);
+    LayerType layerTypeRequired() const override { return NormalLayer; }
+    void paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset) override;
 };
 
 } // namespace blink