wifi_sync: add ability to convert WifiCredential to onc properties

components/wifi_sync/network_state_helper_chromeos.cc

Index: components/wifi_sync/network_state_helper_chromeos.cc
diff --git a/components/wifi_sync/network_state_helper_chromeos.cc b/components/wifi_sync/network_state_helper_chromeos.cc
index 54b853527ca2cbe55616ec307c9d75bae14f6c90..9203cceb1b95aebaf1a29d0879051c81ff317df8 100644
--- a/components/wifi_sync/network_state_helper_chromeos.cc
+++ b/components/wifi_sync/network_state_helper_chromeos.cc
@@ -36,10 +36,16 @@ WifiCredential::CredentialSet GetWifiCredentialsForShillProfile(
     // TODO(quiche): Fill in the actual passphrase via an asynchronous
     // call to a chromeos::NetworkConfigurationHandler instance's
     // GetProperties method.
-    credentials.insert(
-        WifiCredential(network->raw_ssid(),
-                       WifiSecurityClassFromShillSecurity(network->security()),
-                       ""  /* empty passphrase */));
+    scoped_ptr<WifiCredential> credential =
+        WifiCredential::Create(
+            network->raw_ssid(),
+            WifiSecurityClassFromShillSecurity(network->security()),
+            ""  /* empty passphrase */);
+    if (!credential) {
+      LOG(ERROR) << "Failed to create credential";
+    } else {
+      credentials.insert(*credential);
+    }
   }
   return credentials;
 }