Convert crypto to std::unique_ptr

crypto/nss_key_util.cc

Index: crypto/nss_key_util.cc
diff --git a/crypto/nss_key_util.cc b/crypto/nss_key_util.cc
index 3e0348954bb70c8811843c45aa1f53d4afa69a9f..1f726674ec8272017cd187f947c5783d2530550b 100644
--- a/crypto/nss_key_util.cc
+++ b/crypto/nss_key_util.cc
@@ -9,6 +9,8 @@
 #include <pk11pub.h>
 #include <stdint.h>
 
+#include <memory>
+
 #include "base/logging.h"
 #include "crypto/nss_util.h"
 
@@ -29,7 +31,7 @@ struct PublicKeyInfoDeleter {
   }
 };
 
-typedef scoped_ptr<CERTSubjectPublicKeyInfo, PublicKeyInfoDeleter>
+typedef std::unique_ptr<CERTSubjectPublicKeyInfo, PublicKeyInfoDeleter>
     ScopedPublicKeyInfo;
 
 // Decodes |input| as a SubjectPublicKeyInfo and returns a SECItem containing