diff --git a/modules/video_coding/packet_buffer.h b/modules/video_coding/packet_buffer.h
index ede3c602eb..8219c87e72 100644
--- a/modules/video_coding/packet_buffer.h
+++ b/modules/video_coding/packet_buffer.h
@@ -114,8 +114,7 @@ class PacketBuffer {
       RTC_EXCLUSIVE_LOCKS_REQUIRED(crit_);
 
   // Copy the bitstream for |frame| to |destination|.
-  // Virtual for testing.
-  virtual bool GetBitstream(const RtpFrameObject& frame, uint8_t* destination);
+  bool GetBitstream(const RtpFrameObject& frame, uint8_t* destination);
 
   // Get the packet with sequence number |seq_num|.
   // Virtual for testing.
diff --git a/modules/video_coding/rtp_frame_reference_finder_unittest.cc b/modules/video_coding/rtp_frame_reference_finder_unittest.cc
index 2d02a302d1..428b49c2a9 100644
--- a/modules/video_coding/rtp_frame_reference_finder_unittest.cc
+++ b/modules/video_coding/rtp_frame_reference_finder_unittest.cc
@@ -40,11 +40,6 @@ class FakePacketBuffer : public PacketBuffer {
     return true;
   }
 
-  bool GetBitstream(const RtpFrameObject& frame,
-                    uint8_t* destination) override {
-    return true;
-  }
-
  private:
   std::map<uint16_t, VCMPacket> packets_;
 };
diff --git a/test/fuzzers/rtp_frame_reference_finder_fuzzer.cc b/test/fuzzers/rtp_frame_reference_finder_fuzzer.cc
index f2482fee8c..0f37881f3e 100644
--- a/test/fuzzers/rtp_frame_reference_finder_fuzzer.cc
+++ b/test/fuzzers/rtp_frame_reference_finder_fuzzer.cc
@@ -100,11 +100,6 @@ class FuzzyPacketBuffer : public video_coding::PacketBuffer {
     return packet;
   }
 
-  bool GetBitstream(const video_coding::RtpFrameObject& frame,
-                    uint8_t* destination) override {
-    return true;
-  }
-
  private:
   std::map<uint16_t, VCMPacket> packets;
   VideoCodecType codec;
diff --git a/video/buffered_frame_decryptor_unittest.cc b/video/buffered_frame_decryptor_unittest.cc
index effd8282de..2a1c591088 100644
--- a/video/buffered_frame_decryptor_unittest.cc
+++ b/video/buffered_frame_decryptor_unittest.cc
@@ -41,11 +41,6 @@ class FakePacketBuffer : public video_coding::PacketBuffer {
     return true;
   }
 
-  bool GetBitstream(const video_coding::RtpFrameObject& frame,
-                    uint8_t* destination) override {
-    return true;
-  }
-
  private:
   std::map<uint16_t, VCMPacket> packets_;
 };