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diff --git a/third_party/libwebrtc/modules/video_coding/frame_helpers.h b/third_party/libwebrtc/modules/video_coding/frame_helpers.h
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+++ b/third_party/libwebrtc/modules/video_coding/frame_helpers.h
@@ -0,0 +1,30 @@
+/*
+ *  Copyright (c) 2021 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 MODULES_VIDEO_CODING_FRAME_HELPERS_H_
+#define MODULES_VIDEO_CODING_FRAME_HELPERS_H_
+
+#include <memory>
+
+#include "absl/container/inlined_vector.h"
+#include "api/video/encoded_frame.h"
+
+namespace webrtc {
+
+bool FrameHasBadRenderTiming(Timestamp render_time,
+                             Timestamp now,
+                             TimeDelta target_video_delay);
+
+std::unique_ptr<EncodedFrame> CombineAndDeleteFrames(
+    absl::InlinedVector<std::unique_ptr<EncodedFrame>, 4> frames);
+
+}  // namespace webrtc
+
+#endif  // MODULES_VIDEO_CODING_FRAME_HELPERS_H_