Port SkXfermode opts to SkOpts.h

src/opts/SkXfermode_opts_arm_neon.cpp

Index: src/opts/SkXfermode_opts_arm_neon.cpp
diff --git a/src/opts/SkXfermode_opts_arm_neon.cpp b/src/opts/SkXfermode_opts_arm_neon.cpp
deleted file mode 100644
index ae0fd17b2589cb7302c1f0963acf479eb1e1e274..0000000000000000000000000000000000000000
--- a/src/opts/SkXfermode_opts_arm_neon.cpp
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-// Including Sk4pxXfermode.h from this file should find SK_ARM_HAS_NEON is defined.
-#include "Sk4pxXfermode.h"
-
-SkProcCoeffXfermode* SkPlatformXfermodeFactory_impl_neon(const ProcCoeff& r, SkXfermode::Mode m);
-SkProcCoeffXfermode* SkPlatformXfermodeFactory_impl_neon(const ProcCoeff& r, SkXfermode::Mode m) {
-    return SkCreate4pxXfermode(r, m);
-}