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diff --git a/third_party/libwebrtc/api/video/i010_buffer.h b/third_party/libwebrtc/api/video/i010_buffer.h
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+++ b/third_party/libwebrtc/api/video/i010_buffer.h
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+/*
+ *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef API_VIDEO_I010_BUFFER_H_
+#define API_VIDEO_I010_BUFFER_H_
+
+#include <stdint.h>
+
+#include <memory>
+
+#include "api/scoped_refptr.h"
+#include "api/video/video_frame_buffer.h"
+#include "api/video/video_rotation.h"
+#include "rtc_base/memory/aligned_malloc.h"
+
+namespace webrtc {
+
+// Plain I010 buffer in standard memory.
+class I010Buffer : public I010BufferInterface {
+ public:
+  // Create a new buffer.
+  static rtc::scoped_refptr<I010Buffer> Create(int width, int height);
+
+  // Create a new buffer and copy the pixel data.
+  static rtc::scoped_refptr<I010Buffer> Copy(const I010BufferInterface& buffer);
+
+  // Convert and put I420 buffer into a new buffer.
+  static rtc::scoped_refptr<I010Buffer> Copy(const I420BufferInterface& buffer);
+
+  // Return a rotated copy of `src`.
+  static rtc::scoped_refptr<I010Buffer> Rotate(const I010BufferInterface& src,
+                                               VideoRotation rotation);
+
+  // VideoFrameBuffer implementation.
+  rtc::scoped_refptr<I420BufferInterface> ToI420() override;
+
+  // PlanarYuv16BBuffer implementation.
+  int width() const override;
+  int height() const override;
+  const uint16_t* DataY() const override;
+  const uint16_t* DataU() const override;
+  const uint16_t* DataV() const override;
+  int StrideY() const override;
+  int StrideU() const override;
+  int StrideV() const override;
+
+  uint16_t* MutableDataY();
+  uint16_t* MutableDataU();
+  uint16_t* MutableDataV();
+
+  // Scale the cropped area of `src` to the size of `this` buffer, and
+  // write the result into `this`.
+  void CropAndScaleFrom(const I010BufferInterface& src,
+                        int offset_x,
+                        int offset_y,
+                        int crop_width,
+                        int crop_height);
+
+  // Scale all of `src` to the size of `this` buffer, with no cropping.
+  void ScaleFrom(const I010BufferInterface& src);
+
+ protected:
+  I010Buffer(int width, int height, int stride_y, int stride_u, int stride_v);
+  ~I010Buffer() override;
+
+ private:
+  const int width_;
+  const int height_;
+  const int stride_y_;
+  const int stride_u_;
+  const int stride_v_;
+  const std::unique_ptr<uint16_t, AlignedFreeDeleter> data_;
+};
+
+}  // namespace webrtc
+
+#endif  // API_VIDEO_I010_BUFFER_H_