Remove SK_SUPPORT_LEGACY_XFERMODE_PTR

cc/output/software_renderer.cc

Index: cc/output/software_renderer.cc
diff --git a/cc/output/software_renderer.cc b/cc/output/software_renderer.cc
index 37696462d433a82b93a0500b76c3b4a799c6e0d7..7b8c6f0304a0410c4d75e48e20b41bcc9d826c81 100644
--- a/cc/output/software_renderer.cc
+++ b/cc/output/software_renderer.cc
@@ -642,11 +642,9 @@ skia::RefPtr<SkImage> SoftwareRenderer::ApplyImageFilter(
   localM.setTranslate(SkIntToScalar(-quad->rect.origin().x()),
                       SkIntToScalar(-quad->rect.origin().y()));
   localM.preScale(quad->filters_scale.x(), quad->filters_scale.y());
-  skia::RefPtr<SkImageFilter> localIMF =
-      skia::AdoptRef(filter->newWithLocalMatrix(localM));
 
   SkPaint paint;
-  paint.setImageFilter(localIMF.get());
+  paint.setImageFilter(filter->makeWithLocalMatrix(localM));
   surface->getCanvas()->drawBitmap(*to_filter, 0, 0, &paint);
 
   return skia::AdoptRef(surface->newImageSnapshot());