Enable supervised users password sync/import on ChromeOS

chromeos/cryptohome/mock_homedir_methods.cc

Index: chromeos/cryptohome/mock_homedir_methods.cc
diff --git a/chromeos/cryptohome/mock_homedir_methods.cc b/chromeos/cryptohome/mock_homedir_methods.cc
index 9e6cdabb222e53b20eef080cedde84bff5302a35..0cb4a387bc30838bce3cc57cee66a047767ba398 100644
--- a/chromeos/cryptohome/mock_homedir_methods.cc
+++ b/chromeos/cryptohome/mock_homedir_methods.cc
@@ -28,6 +28,8 @@ void MockHomedirMethods::SetUp(bool success, MountError return_code) {
       WithArgs<4>(Invoke(this, &MockHomedirMethods::DoCallback)));
   ON_CALL(*this, UpdateKeyEx(_, _, _, _, _)).WillByDefault(
       WithArgs<4>(Invoke(this, &MockHomedirMethods::DoCallback)));
+  ON_CALL(*this, RemoveKeyEx(_, _, _, _)).WillByDefault(
+      WithArgs<3>(Invoke(this, &MockHomedirMethods::DoCallback)));
 }
 
 void MockHomedirMethods::DoCallback(const Callback& callback) {