Modifications to DisplayList for better Slimming Paint

Source/platform/transforms/AffineTransform.cpp

 /*
  * Copyright (C) 2005, 2006 Apple Computer, Inc.  All rights reserved.
  *               2010 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * 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.
@@ skipping 205 matching lines @@
 AffineTransform& AffineTransform::skewX(double angle)
 {
     return shear(tan(deg2rad(angle)), 0);
 }
 
 AffineTransform& AffineTransform::skewY(double angle)
 {
     return shear(0, tan(deg2rad(angle)));
 }
 
-AffineTransform makeMapBetweenRects(const FloatRect& source, const FloatRect& dest)
-{
-    AffineTransform transform;
-    transform.translate(dest.x() - source.x(), dest.y() - source.y());
-    transform.scale(dest.width() / source.width(), dest.height() / source.height());
-    return transform;
-}
-
 void AffineTransform::map(double x, double y, double& x2, double& y2) const
 {
     x2 = (m_transform[0] * x + m_transform[2] * y + m_transform[4]);
     y2 = (m_transform[1] * x + m_transform[3] * y + m_transform[5]);
 }
 
 IntPoint AffineTransform::mapPoint(const IntPoint& point) const
 {
     double x2, y2;
     map(point.x(), point.y(), x2, y2);
@@ skipping 119 matching lines @@
     this->setB(decomp.remainderB);
     this->setC(decomp.remainderC);
     this->setD(decomp.remainderD);
     this->setE(decomp.translateX);
     this->setF(decomp.translateY);
     this->rotateRadians(decomp.angle);
     this->scale(decomp.scaleX, decomp.scaleY);
 }
 
 }