Move HalfFloatMaker to media

media/video/half_float_maker_lib_yuv.h

+// Copyright 2017 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_VIDEO_HALF_FLOAT_MAKER_LIB_YUV_H_
+#define MEDIA_VIDEO_HALF_FLOAT_MAKER_LIB_YUV_H_
+
+#include "media/base/media_export.h"
+#include "media/video/half_float_maker.h"
+
+namespace media {
+
+class MEDIA_EXPORT HalfFloatMaker_libyuv : public media::HalfFloatMaker {
+ public:
+  explicit HalfFloatMaker_libyuv(int bits_per_channel);
+  float Offset() const override;
+  float Multiplier() const override;
+  void MakeHalfFloats(const uint16_t* src, size_t num, uint16_t* dst) override;
+
+ private:
+  float libyuv_multiplier_;
+  float resource_multiplier_;
+};
+
+}  // namespace media
+#endif  // MEDIA_VIDEO_HALF_FLOAT_MAKER_H_