Revert of Replace the remaining scoped_ptr with unique_ptr in webrtc/modules/

webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc

Index: webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc
diff --git a/webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc b/webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc
index 8069b0950b6b19aea6c64f2a5588ffd259ac2ca1..9b44c4f40dbe934d9b229a24f49f64c0f8e12478 100644
--- a/webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc
+++ b/webrtc/modules/rtp_rtcp/test/testAPI/test_api_audio.cc
@@ -9,7 +9,6 @@
  */
 
 #include <algorithm>
-#include <memory>
 #include <vector>
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -136,12 +135,12 @@
 
   RtpRtcp* module1;
   RtpRtcp* module2;
-  std::unique_ptr<ReceiveStatistics> receive_statistics1_;
-  std::unique_ptr<ReceiveStatistics> receive_statistics2_;
-  std::unique_ptr<RtpReceiver> rtp_receiver1_;
-  std::unique_ptr<RtpReceiver> rtp_receiver2_;
-  std::unique_ptr<RTPPayloadRegistry> rtp_payload_registry1_;
-  std::unique_ptr<RTPPayloadRegistry> rtp_payload_registry2_;
+  rtc::scoped_ptr<ReceiveStatistics> receive_statistics1_;
+  rtc::scoped_ptr<ReceiveStatistics> receive_statistics2_;
+  rtc::scoped_ptr<RtpReceiver> rtp_receiver1_;
+  rtc::scoped_ptr<RtpReceiver> rtp_receiver2_;
+  rtc::scoped_ptr<RTPPayloadRegistry> rtp_payload_registry1_;
+  rtc::scoped_ptr<RTPPayloadRegistry> rtp_payload_registry2_;
   VerifyingAudioReceiver* data_receiver1;
   VerifyingAudioReceiver* data_receiver2;
   LoopBackTransport* transport1;