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

media/cast/test/utility/net_utility.cc

Index: media/cast/test/utility/net_utility.cc
diff --git a/media/cast/test/utility/net_utility.cc b/media/cast/test/utility/net_utility.cc
index d3204c06be57b5df265dded85aecb8f1ca0469bb..9a1457bb377e65b926c7963979b0e8320d23c0af 100644
--- a/media/cast/test/utility/net_utility.cc
+++ b/media/cast/test/utility/net_utility.cc
@@ -4,7 +4,8 @@
 
 #include "media/cast/test/utility/net_utility.h"
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "net/base/ip_address.h"
 #include "net/base/net_errors.h"
 #include "net/udp/udp_server_socket.h"
@@ -15,7 +16,7 @@ namespace test {
 
 // TODO(hubbe): Move to /net/.
 net::IPEndPoint GetFreeLocalPort() {
-  scoped_ptr<net::UDPServerSocket> receive_socket(
+  std::unique_ptr<net::UDPServerSocket> receive_socket(
       new net::UDPServerSocket(NULL, net::NetLog::Source()));
   receive_socket->AllowAddressReuse();
   CHECK_EQ(net::OK, receive_socket->Listen(