Remove usage of singleton software_slot_ in nss on ChromeOS

chrome/browser/chromeos/ownership/owner_settings_service.h

Index: chrome/browser/chromeos/ownership/owner_settings_service.h
diff --git a/chrome/browser/chromeos/ownership/owner_settings_service.h b/chrome/browser/chromeos/ownership/owner_settings_service.h
index 23f64dd78f81d08dd1036e87442c438f78e9cc6b..b6b507b0a5aab57483690c87f41d5f55b6f52e5c 100644
--- a/chrome/browser/chromeos/ownership/owner_settings_service.h
+++ b/chrome/browser/chromeos/ownership/owner_settings_service.h
@@ -52,9 +52,11 @@ class OwnerSettingsService : public DeviceSettingsService::PrivateKeyDelegate,
   // TPMTokenLoader::Observer:
   virtual void OnTPMTokenReady() OVERRIDE;
 
-  // Checks whether NSS slots with private key are mounted or
-  // not. Responds via |callback|.
-  static void IsPrivateKeyExistAsync(const IsOwnerCallback& callback);
+  // Checks if the user is the device owner, without the user profile having to
+  // been initialized. Should be used only if login state is in safe mode.
+  static void IsOwnerForSafeModeAsync(const std::string& user_id,
+                                      const std::string& user_hash,
+                                      const IsOwnerCallback& callback);
 
   static void SetOwnerKeyUtilForTesting(
       const scoped_refptr<OwnerKeyUtil>& owner_key_util);