Modifications to DisplayList for better Slimming Paint

Source/platform/transforms/AffineTransform.cpp

Index: Source/platform/transforms/AffineTransform.cpp
diff --git a/Source/platform/transforms/AffineTransform.cpp b/Source/platform/transforms/AffineTransform.cpp
index cc3952298f8f2c2763aa003d701442b73f5d37b7..e3615b7940d0ef7780f8791f02ceb417c47b7f46 100644
--- a/Source/platform/transforms/AffineTransform.cpp
+++ b/Source/platform/transforms/AffineTransform.cpp
@@ -223,14 +223,6 @@ 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]);