Replace the remaining scoped_ptr with unique_ptr in webrtc/modules/

webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc

Index: webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc b/webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
index 9a5d4714a199c89c6ffaf269a07291d09bdacdd8..8817d4d3e83c7c7b1069c959c57f172e6c4c031f 100644
--- a/webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtcp_sender_unittest.cc
@@ -8,6 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#include <memory>
+
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -256,9 +258,9 @@ class RtcpSenderTest : public ::testing::Test {
 
   SimulatedClock clock_;
   TestTransport test_transport_;
-  rtc::scoped_ptr<ReceiveStatistics> receive_statistics_;
-  rtc::scoped_ptr<ModuleRtpRtcpImpl> rtp_rtcp_impl_;
-  rtc::scoped_ptr<RTCPSender> rtcp_sender_;
+  std::unique_ptr<ReceiveStatistics> receive_statistics_;
+  std::unique_ptr<ModuleRtpRtcpImpl> rtp_rtcp_impl_;
+  std::unique_ptr<RTCPSender> rtcp_sender_;
 };
 
 TEST_F(RtcpSenderTest, SetRtcpStatus) {