Implemented OwnerSettingsService::Set() method.

chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.cc

Index: chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.cc
diff --git a/chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.cc b/chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.cc
index b971f3407aee5953c657ed4ca0677ff88650a47b..e43b03dce0e2df207139eaf87853204628498e29 100644
--- a/chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.cc
+++ b/chrome/browser/chromeos/ownership/owner_settings_service_chromeos_factory.cc
@@ -7,6 +7,7 @@
 #include "base/path_service.h"
 #include "chrome/browser/chromeos/ownership/owner_settings_service_chromeos.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
+#include "chrome/browser/chromeos/settings/device_settings_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chromeos/chromeos_paths.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
@@ -15,6 +16,12 @@
 
 namespace chromeos {
 
+namespace {
+
+DeviceSettingsService* g_device_settings_service_for_testing_ = nullptr;
+
+}  // namespace
+
 OwnerSettingsServiceChromeOSFactory::OwnerSettingsServiceChromeOSFactory()
     : BrowserContextKeyedServiceFactory(
           "OwnerSettingsService",
@@ -37,6 +44,12 @@ OwnerSettingsServiceChromeOSFactory::GetInstance() {
   return Singleton<OwnerSettingsServiceChromeOSFactory>::get();
 }
 
+// static
+void OwnerSettingsServiceChromeOSFactory::SetDeviceSettingsServiceForTesting(
+    DeviceSettingsService* device_settings_service) {
+  g_device_settings_service_for_testing_ = device_settings_service;
+}
+
 scoped_refptr<ownership::OwnerKeyUtil>
 OwnerSettingsServiceChromeOSFactory::GetOwnerKeyUtil() {
   if (owner_key_util_.get())
@@ -59,8 +72,11 @@ KeyedService* OwnerSettingsServiceChromeOSFactory::BuildInstanceFor(
   Profile* profile = static_cast<Profile*>(browser_context);
   if (profile->IsGuestSession() || ProfileHelper::IsSigninProfile(profile))
     return NULL;
-  return new OwnerSettingsServiceChromeOS(profile,
-                                          GetInstance()->GetOwnerKeyUtil());
+  return new OwnerSettingsServiceChromeOS(
+      g_device_settings_service_for_testing_
+          ? g_device_settings_service_for_testing_
+          : DeviceSettingsService::Get(),
+      profile, GetInstance()->GetOwnerKeyUtil());
 }
 
 bool OwnerSettingsServiceChromeOSFactory::ServiceIsCreatedWithBrowserContext()