Include additional translation in getBBox for SVGUseElement

Source/core/layout/svg/LayoutSVGTransformableContainer.h

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 16 matching lines @@
 
 class SVGGraphicsElement;
 class LayoutSVGTransformableContainer final : public LayoutSVGContainer {
 public:
     explicit LayoutSVGTransformableContainer(SVGGraphicsElement*);
 
     bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
 
     bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectSVGTransformableContainer || LayoutSVGContainer::isOfType(type); }
     const AffineTransform& localToParentTransform() const override { return m_localTransform; }
+    const FloatSize& additionalTranslation() const { return m_lastTranslation; }

[pdr., 2015/09/11 05:57:18]

WDYT about renaming m_lastTranslation since "last" is a little ambiguous?

+
     void setNeedsTransformUpdate() override { m_needsTransformUpdate = true; }
     bool didTransformToRootUpdate() override { return m_didTransformToRootUpdate; }
 
 private:
     bool calculateLocalTransform() override;
     AffineTransform localTransform() const override { return m_localTransform; }
 
     bool m_needsTransformUpdate : 1;
     bool m_didTransformToRootUpdate : 1;
     AffineTransform m_localTransform;
     FloatSize m_lastTranslation;
 };
 
+DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutSVGTransformableContainer, isSVGTransformableContainer());
+
 }
 
 #endif // LayoutSVGTransformableContainer_h