Split AudioRendererMixer::VectorFMAC into VectorMath library.

media/base/vector_math_testing.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_BASE_VECTOR_MATH_TESTING_H_
+#define MEDIA_BASE_VECTOR_MATH_TESTING_H_
+
+#include "media/base/media_export.h"
+
+namespace media {
+namespace vector_math {
+
+// Optimized versions of FMAC() function exposed for testing.  See vector_math.h
+// for details.
+MEDIA_EXPORT void FMAC_C(const float src[], float scale, int len, float dest[]);
+MEDIA_EXPORT void FMAC_SSE(const float src[], float scale, int len,
+                           float dest[]);
+
+}  // namespace vector_math
+}  // namespace media
+
+#endif  // MEDIA_BASE_VECTOR_MATH_TESTING_H_