Replace the remaining scoped_ptr with unique_ptr in webrtc/modules/

webrtc/modules/rtp_rtcp/source/rtcp_format_remb_unittest.cc

Index: webrtc/modules/rtp_rtcp/source/rtcp_format_remb_unittest.cc
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_format_remb_unittest.cc b/webrtc/modules/rtp_rtcp/source/rtcp_format_remb_unittest.cc
index 183076ff59141e2cc9a3f3634588da42563dedd9..bbfb52c6cc9b78b6e65d98d509a8d79fec666537 100644
--- a/webrtc/modules/rtp_rtcp/source/rtcp_format_remb_unittest.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtcp_format_remb_unittest.cc
@@ -8,6 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#include <memory>
+
 #include "testing/gtest/include/gtest/gtest.h"
 
 #include "webrtc/common_types.h"
@@ -74,13 +76,13 @@ class RtcpFormatRembTest : public ::testing::Test {
   OverUseDetectorOptions over_use_detector_options_;
   Clock* system_clock_;
   ModuleRtpRtcpImpl* dummy_rtp_rtcp_impl_;
-  rtc::scoped_ptr<ReceiveStatistics> receive_statistics_;
+  std::unique_ptr<ReceiveStatistics> receive_statistics_;
   RTCPSender* rtcp_sender_;
   RTCPReceiver* rtcp_receiver_;
   TestTransport* test_transport_;
   test::NullTransport null_transport_;
   MockRemoteBitrateObserver remote_bitrate_observer_;
-  rtc::scoped_ptr<RemoteBitrateEstimator> remote_bitrate_estimator_;
+  std::unique_ptr<RemoteBitrateEstimator> remote_bitrate_estimator_;
 };
 
 void RtcpFormatRembTest::SetUp() {