Switch to direct use of OwnerSettingsServiceChromeOS::Set() in tests.

chrome/browser/chromeos/login/users/user_manager_unittest.cc

Index: chrome/browser/chromeos/login/users/user_manager_unittest.cc
diff --git a/chrome/browser/chromeos/login/users/user_manager_unittest.cc b/chrome/browser/chromeos/login/users/user_manager_unittest.cc
index 3765efa4651b545664701ac8c717fd3691647004..477084933b96bb5dfcbaf1bf24f424057eff8f37 100644
--- a/chrome/browser/chromeos/login/users/user_manager_unittest.cc
+++ b/chrome/browser/chromeos/login/users/user_manager_unittest.cc
@@ -62,8 +62,7 @@ class UserManagerTest : public testing::Test {
     cros_settings_ = CrosSettings::Get();
 
     // Replace the real DeviceSettingsProvider with a stub.
-    device_settings_provider_ =
-        cros_settings_->GetProvider(chromeos::kReportDeviceVersionInfo);
+    device_settings_provider_ = cros_settings_->GetProvider(kDeviceOwner);
     EXPECT_TRUE(device_settings_provider_);
     EXPECT_TRUE(
         cros_settings_->RemoveSettingsProvider(device_settings_provider_));