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

chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc

Index: chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc
diff --git a/chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc b/chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc
index 59e840165995fc26e73017450334e125208820aa..2e25f8496953a17bad8664dadae2ac06d691cc6b 100644
--- a/chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc
+++ b/chrome/browser/chromeos/policy/device_policy_cros_browser_test.cc
@@ -31,13 +31,14 @@ DevicePolicyCrosTestHelper::DevicePolicyCrosTestHelper() {}
 
 DevicePolicyCrosTestHelper::~DevicePolicyCrosTestHelper() {}
 
-void DevicePolicyCrosTestHelper::MarkAsEnterpriseOwned() {
+// static
+void DevicePolicyCrosTestHelper::MarkAsEnterpriseOwnedBy(
+    const std::string& user_name) {
   OverridePaths();
 
   const std::string install_attrs_blob(
       EnterpriseInstallAttributes::
-          GetEnterpriseOwnedInstallAttributesBlobForTesting(
-              device_policy_.policy_data().username()));
+          GetEnterpriseOwnedInstallAttributesBlobForTesting(user_name));
 
   base::FilePath install_attrs_file;
   ASSERT_TRUE(
@@ -48,6 +49,10 @@ void DevicePolicyCrosTestHelper::MarkAsEnterpriseOwned() {
                             install_attrs_blob.size()));
 }
 
+void DevicePolicyCrosTestHelper::MarkAsEnterpriseOwned() {
+  MarkAsEnterpriseOwnedBy(device_policy_.policy_data().username());
+}
+
 void DevicePolicyCrosTestHelper::InstallOwnerKey() {
   OverridePaths();
 
@@ -63,6 +68,7 @@ void DevicePolicyCrosTestHelper::InstallOwnerKey() {
       static_cast<int>(owner_key_bits.size()));
 }
 
+// static
 void DevicePolicyCrosTestHelper::OverridePaths() {
   // This is usually done by ChromeBrowserMainChromeOS, but some tests
   // use the overridden paths before ChromeBrowserMain starts. Make sure that