Replace scoped_ptr with unique_ptr in webrtc/base/

webrtc/base/asyncudpsocket.cc

Index: webrtc/base/asyncudpsocket.cc
diff --git a/webrtc/base/asyncudpsocket.cc b/webrtc/base/asyncudpsocket.cc
index 4e8073308430ed3da55c6a729fdd6278732cfcec..7eb2a0e09e257cbeede3481df65bf8fd0cb61409 100644
--- a/webrtc/base/asyncudpsocket.cc
+++ b/webrtc/base/asyncudpsocket.cc
@@ -18,7 +18,7 @@ static const int BUF_SIZE = 64 * 1024;
 AsyncUDPSocket* AsyncUDPSocket::Create(
     AsyncSocket* socket,
     const SocketAddress& bind_address) {
-  scoped_ptr<AsyncSocket> owned_socket(socket);
+  std::unique_ptr<AsyncSocket> owned_socket(socket);
   if (socket->Bind(bind_address) < 0) {
     LOG(LS_ERROR) << "Bind() failed with error " << socket->GetError();
     return NULL;