Lazily allocate svg shape transforms, shrink RenderSVGShape by 44B

Source/platform/transforms/AffineTransform.h

 /*
  * Copyright (C) 2005, 2006 Apple Computer, Inc.  All rights reserved.
  *               2010 Dirk Schulze <krit@webkit.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 33 matching lines @@
 class PLATFORM_EXPORT AffineTransform {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     typedef double Transform[6];
 
     AffineTransform();
     AffineTransform(double a, double b, double c, double d, double e, double f);
 
     void setMatrix(double a, double b, double c, double d, double e, double f);
 
+    void setTransform(const AffineTransform& other) { setMatrix(other.m_transform); }
+
     void map(double x, double y, double& x2, double& y2) const;
 
     // Rounds the mapped point to the nearest integer value.
     IntPoint mapPoint(const IntPoint&) const;
 
     FloatPoint mapPoint(const FloatPoint&) const;
 
     IntSize mapSize(const IntSize&) const;
 
     FloatSize mapSize(const FloatSize&) const;
@@ skipping 109 matching lines @@
         if (m && m != m_transform)
             memcpy(m_transform, m, sizeof(Transform));
     }
 
     Transform m_transform;
 };
 
 }
 
 #endif