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 138 matching lines @@
         AffineTransform result = *this;
         result *= t;
         return result;
     }
 
     static AffineTransform translation(double x, double y)
     {
         return AffineTransform(1, 0, 0, 1, x, y);
     }
 
+    AffineTransform& operator =(const AffineTransform &t)

[fs, 2014/11/10 11:36:43]

Hmm, why was this needed? Worrying about self-assignments? (I don't see that
happening with the newly added code?)

+    {
+        setMatrix(t.m_transform);
+        return *this;
+    }
+
     // decompose the matrix into its component parts
     typedef struct {
         double scaleX, scaleY;
         double angle;
         double remainderA, remainderB, remainderC, remainderD;
         double translateX, translateY;
     } DecomposedType;
 
     bool decompose(DecomposedType&) const;
     void recompose(const DecomposedType&);
 
 private:
     void setMatrix(const Transform m)
     {
         if (m && m != m_transform)
             memcpy(m_transform, m, sizeof(Transform));
     }
 
     Transform m_transform;
 };
 
 }
 
 #endif