Convert //media/cast from scoped_ptr to std::unique_ptr

media/cast/net/rtcp/rtcp_unittest.cc

Index: media/cast/net/rtcp/rtcp_unittest.cc
diff --git a/media/cast/net/rtcp/rtcp_unittest.cc b/media/cast/net/rtcp/rtcp_unittest.cc
index ef28072831afb5a6ce16f7793f8dd7fd93bcb07c..23bf602b46155d1b1804f96b5801064c7bbccc2f 100644
--- a/media/cast/net/rtcp/rtcp_unittest.cc
+++ b/media/cast/net/rtcp/rtcp_unittest.cc
@@ -184,8 +184,8 @@ class RtcpTest : public ::testing::Test {
 
   void OnReceivedPli() { received_pli_ = true; }
 
-  scoped_ptr<base::SimpleTestTickClock> sender_clock_;
-  scoped_ptr<test::SkewedTickClock> receiver_clock_;
+  std::unique_ptr<base::SimpleTestTickClock> sender_clock_;
+  std::unique_ptr<test::SkewedTickClock> receiver_clock_;
   FakeRtcpTransport rtp_sender_pacer_;
   FakeRtcpTransport rtp_receiver_pacer_;
   SenderRtcpSession rtcp_at_rtp_sender_;