Replace scoped_ptr with unique_ptr in webrtc/p2p/

webrtc/p2p/base/transportdescription.h

Index: webrtc/p2p/base/transportdescription.h
diff --git a/webrtc/p2p/base/transportdescription.h b/webrtc/p2p/base/transportdescription.h
index 003780b767928b166d0523c8ac1ec1a670b26ce2..d9cd52432971c55102b63aaaeee32a3665a0dc46 100644
--- a/webrtc/p2p/base/transportdescription.h
+++ b/webrtc/p2p/base/transportdescription.h
@@ -12,6 +12,7 @@
 #define WEBRTC_P2P_BASE_TRANSPORTDESCRIPTION_H_
 
 #include <algorithm>
+#include <memory>
 #include <string>
 #include <vector>
 
@@ -139,7 +140,7 @@ struct TransportDescription {
   IceMode ice_mode;
   ConnectionRole connection_role;
 
-  rtc::scoped_ptr<rtc::SSLFingerprint> identity_fingerprint;
+  std::unique_ptr<rtc::SSLFingerprint> identity_fingerprint;
 };
 
 }  // namespace cricket