Move supplemental transform to rare data

Source/core/svg/SVGElementRareData.h

 /*
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 59 matching lines @@
 
     MutableStylePropertySet* animatedSMILStyleProperties() const { return m_animatedSMILStyleProperties.get(); }
     MutableStylePropertySet* ensureAnimatedSMILStyleProperties();
 
     RenderStyle* overrideComputedStyle(Element*, RenderStyle*);
 
     bool useOverrideComputedStyle() const { return m_useOverrideComputedStyle; }
     void setUseOverrideComputedStyle(bool value) { m_useOverrideComputedStyle = value; }
     void setNeedsOverrideComputedStyleUpdate() { m_needsOverrideComputedStyleUpdate = true; }
 
+    AffineTransform* animateMotionTransform();
+
     void trace(Visitor*);
     void processWeakMembers(Visitor*);
 
 private:
 #if ENABLE(OILPAN)
     Member<SVGElement> m_owner;
 #endif
     SVGElementSet m_outgoingReferences;
     SVGElementSet m_incomingReferences;
     WillBeHeapHashSet<RawPtrWillBeWeakMember<SVGElement> > m_elementInstances;
     RawPtrWillBeWeakMember<SVGCursorElement> m_cursorElement;
     RawPtrWillBeWeakMember<CSSCursorImageValue> m_cursorImageValue;
     RefPtrWillBeMember<SVGElement> m_correspondingElement;
     bool m_instancesUpdatesBlocked : 1;
     bool m_useOverrideComputedStyle : 1;
     bool m_needsOverrideComputedStyleUpdate : 1;
     RefPtrWillBeMember<MutableStylePropertySet> m_animatedSMILStyleProperties;
     RefPtr<RenderStyle> m_overrideComputedStyle;
+    // Used by <animateMotion>
+    OwnPtr<AffineTransform> m_animateMotionTransform;
 };
 
 }
 
 #endif