Replace scoped_ptr with unique_ptr in webrtc/base/

webrtc/base/testechoserver.h

Index: webrtc/base/testechoserver.h
diff --git a/webrtc/base/testechoserver.h b/webrtc/base/testechoserver.h
index 51d7d539e4f2d4c06f5b31de6c43dfb1a9de2f69..e87a63f86fa5f63797c595b7fb0636d0d584b1e3 100644
--- a/webrtc/base/testechoserver.h
+++ b/webrtc/base/testechoserver.h
@@ -12,6 +12,7 @@
 #define WEBRTC_BASE_TESTECHOSERVER_H_
 
 #include <list>
+#include <memory>
 #include "webrtc/base/asynctcpsocket.h"
 #include "webrtc/base/socketaddress.h"
 #include "webrtc/base/sigslot.h"
@@ -63,7 +64,7 @@ class TestEchoServer : public sigslot::has_slots<> {
   }
 
   typedef std::list<AsyncTCPSocket*> ClientList;
-  scoped_ptr<AsyncSocket> server_socket_;
+  std::unique_ptr<AsyncSocket> server_socket_;
   ClientList client_sockets_;
   RTC_DISALLOW_COPY_AND_ASSIGN(TestEchoServer);
 };