Convert Pass()→std::move() in sync/

sync/util/cryptographer.cc

Index: sync/util/cryptographer.cc
diff --git a/sync/util/cryptographer.cc b/sync/util/cryptographer.cc
index 0fe0b25a3c8922329eede2daa12bf0b1368a795c..865f78adc158b9651364808457e6b44693db3e6a 100644
--- a/sync/util/cryptographer.cc
+++ b/sync/util/cryptographer.cc
@@ -5,6 +5,7 @@
 #include "sync/util/cryptographer.h"
 
 #include <algorithm>
+#include <utility>
 
 #include "base/base64.h"
 #include "base/basictypes.h"
@@ -170,7 +171,7 @@ bool Cryptographer::AddKey(const KeyParams& params) {
     NOTREACHED();  // Invalid username or password.
     return false;
   }
-  return AddKeyImpl(nigori.Pass(), true);
+  return AddKeyImpl(std::move(nigori), true);
 }
 
 bool Cryptographer::AddNonDefaultKey(const KeyParams& params) {
@@ -183,7 +184,7 @@ bool Cryptographer::AddNonDefaultKey(const KeyParams& params) {
     NOTREACHED();  // Invalid username or password.
     return false;
   }
-  return AddKeyImpl(nigori.Pass(), false);
+  return AddKeyImpl(std::move(nigori), false);
 }
 
 bool Cryptographer::AddKeyFromBootstrapToken(
@@ -376,7 +377,7 @@ bool Cryptographer::ImportNigoriKey(const std::string& serialized_nigori_key) {
     return false;
   }
 
-  if (!AddKeyImpl(nigori.Pass(), true))
+  if (!AddKeyImpl(std::move(nigori), true))
     return false;
   return true;
 }