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

sky/engine/core/rendering/RenderRemote.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef RenderRemote_h
 #define RenderRemote_h
 
 #include "core/rendering/RenderReplaced.h"
 
 namespace blink {
 
 class HTMLIFrameElement;
 
 class RenderRemote : public RenderReplaced {
 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
 
 #endif // RenderRemote_h