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diff --git a/third_party/libwebrtc/test/testsupport/video_frame_writer.h b/third_party/libwebrtc/test/testsupport/video_frame_writer.h
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+++ b/third_party/libwebrtc/test/testsupport/video_frame_writer.h
@@ -0,0 +1,63 @@
+/*
+ *  Copyright (c) 2019 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 TEST_TESTSUPPORT_VIDEO_FRAME_WRITER_H_
+#define TEST_TESTSUPPORT_VIDEO_FRAME_WRITER_H_
+
+#include <memory>
+#include <string>
+
+#include "api/test/video/video_frame_writer.h"
+#include "api/video/video_frame.h"
+#include "rtc_base/buffer.h"
+#include "test/testsupport/frame_writer.h"
+
+namespace webrtc {
+namespace test {
+
+// Writes webrtc::VideoFrame to specified file with y4m frame writer
+class Y4mVideoFrameWriterImpl : public VideoFrameWriter {
+ public:
+  Y4mVideoFrameWriterImpl(std::string output_file_name,
+                          int width,
+                          int height,
+                          int fps);
+  ~Y4mVideoFrameWriterImpl() override = default;
+
+  bool WriteFrame(const webrtc::VideoFrame& frame) override;
+  void Close() override;
+
+ private:
+  const int width_;
+  const int height_;
+
+  std::unique_ptr<FrameWriter> frame_writer_;
+};
+
+// Writes webrtc::VideoFrame to specified file with yuv frame writer
+class YuvVideoFrameWriterImpl : public VideoFrameWriter {
+ public:
+  YuvVideoFrameWriterImpl(std::string output_file_name, int width, int height);
+  ~YuvVideoFrameWriterImpl() override = default;
+
+  bool WriteFrame(const webrtc::VideoFrame& frame) override;
+  void Close() override;
+
+ private:
+  const int width_;
+  const int height_;
+
+  std::unique_ptr<FrameWriter> frame_writer_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // TEST_TESTSUPPORT_VIDEO_FRAME_WRITER_H_