Port SkXfermode opts to SkOpts.h

src/opts/SkXfermode_opts_arm.cpp

-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkXfermode.h"
-#include "SkXfermode_proccoeff.h"
-#include "SkUtilsArm.h"
-
-// If we find we do have NEON, we'll call this method from SkXfermodes_opts_arm_neon.cpp.
-SkProcCoeffXfermode* SkPlatformXfermodeFactory_impl_neon(const ProcCoeff& rec,
-                                                         SkXfermode::Mode mode);
-
-// If we don't have NEON, we'll call this method and return NULL.
-SkProcCoeffXfermode* SkPlatformXfermodeFactory_impl(const ProcCoeff& rec, SkXfermode::Mode mode);
-SkProcCoeffXfermode* SkPlatformXfermodeFactory_impl(const ProcCoeff& rec, SkXfermode::Mode mode) {
-    return NULL;
-}
-
-SkProcCoeffXfermode* SkPlatformXfermodeFactory(const ProcCoeff& rec, SkXfermode::Mode mode);
-SkProcCoeffXfermode* SkPlatformXfermodeFactory(const ProcCoeff& rec, SkXfermode::Mode mode) {
-    return SK_ARM_NEON_WRAP(SkPlatformXfermodeFactory_impl)(rec, mode);
-}
-
-SkXfermodeProc SkPlatformXfermodeProcFactory(SkXfermode::Mode mode);
-SkXfermodeProc SkPlatformXfermodeProcFactory(SkXfermode::Mode mode) { return NULL; }