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diff --git a/third_party/libwebrtc/test/pc/e2e/analyzer/video/single_process_encoded_image_data_injector.h b/third_party/libwebrtc/test/pc/e2e/analyzer/video/single_process_encoded_image_data_injector.h
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+++ b/third_party/libwebrtc/test/pc/e2e/analyzer/video/single_process_encoded_image_data_injector.h
@@ -0,0 +1,104 @@
+/*
+ *  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_PC_E2E_ANALYZER_VIDEO_SINGLE_PROCESS_ENCODED_IMAGE_DATA_INJECTOR_H_
+#define TEST_PC_E2E_ANALYZER_VIDEO_SINGLE_PROCESS_ENCODED_IMAGE_DATA_INJECTOR_H_
+
+#include <cstdint>
+#include <map>
+#include <memory>
+#include <utility>
+#include <vector>
+
+#include "api/video/encoded_image.h"
+#include "rtc_base/synchronization/mutex.h"
+#include "test/pc/e2e/analyzer/video/encoded_image_data_injector.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// Based on assumption that all call participants are in the same OS process
+// and uses same QualityAnalyzingVideoContext to obtain
+// EncodedImageDataInjector.
+//
+// To inject frame id and discard flag into EncodedImage injector uses last 3rd
+// and 2nd bytes of EncodedImage payload. Then it uses last byte for frame
+// sub id, that is required to distinguish different spatial layers. The origin
+// data from these 3 bytes will be stored inside injector's internal storage and
+// then will be restored during extraction phase.
+//
+// This injector won't add any extra overhead into EncodedImage payload and
+// support frames with any size of payload. Also assumes that every EncodedImage
+// payload size is greater or equals to 3 bytes
+//
+// This injector doesn't support video frames/encoded images without frame ID.
+class SingleProcessEncodedImageDataInjector
+    : public EncodedImageDataPropagator {
+ public:
+  SingleProcessEncodedImageDataInjector();
+  ~SingleProcessEncodedImageDataInjector() override;
+
+  // Id and discard flag will be injected into EncodedImage buffer directly.
+  // This buffer won't be fully copied, so `source` image buffer will be also
+  // changed.
+  EncodedImage InjectData(uint16_t id,
+                          bool discard,
+                          const EncodedImage& source) override;
+
+  void Start(int expected_receivers_count) override {
+    MutexLock crit(&lock_);
+    expected_receivers_count_ = expected_receivers_count;
+  }
+  void AddParticipantInCall() override;
+  void RemoveParticipantInCall() override;
+  EncodedImageExtractionResult ExtractData(const EncodedImage& source) override;
+
+ private:
+  // Contains data required to extract frame id from EncodedImage and restore
+  // original buffer.
+  struct ExtractionInfo {
+    // Number of bytes from the beginning of the EncodedImage buffer that will
+    // be used to store frame id and sub id.
+    const static size_t kUsedBufferSize = 3;
+    // Frame sub id to distinguish encoded images for different spatial layers.
+    uint8_t sub_id;
+    // Flag to show is this encoded images should be discarded by analyzing
+    // decoder because of not required spatial layer/simulcast stream.
+    bool discard;
+    // Data from first 3 bytes of origin encoded image's payload.
+    uint8_t origin_data[ExtractionInfo::kUsedBufferSize];
+    // Count of how many times this frame was received.
+    int received_count = 0;
+  };
+
+  struct ExtractionInfoVector {
+    ExtractionInfoVector();
+    ~ExtractionInfoVector();
+
+    // Next sub id, that have to be used for this frame id.
+    uint8_t next_sub_id = 0;
+    std::map<uint8_t, ExtractionInfo> infos;
+  };
+
+  Mutex lock_;
+  int expected_receivers_count_ RTC_GUARDED_BY(lock_);
+  // Stores a mapping from frame id to extraction info for spatial layers
+  // for this frame id. There can be a lot of them, because if frame was
+  // dropped we can't clean it up, because we won't receive a signal on
+  // decoder side about that frame. In such case it will be replaced
+  // when sub id will overlap.
+  std::map<uint16_t, ExtractionInfoVector> extraction_cache_
+      RTC_GUARDED_BY(lock_);
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // TEST_PC_E2E_ANALYZER_VIDEO_SINGLE_PROCESS_ENCODED_IMAGE_DATA_INJECTOR_H_