Instantiation of OwnerKeyUtil is delegated to OwnerSettingsServiceFactory.

chrome/browser/chromeos/ownership/owner_settings_service_factory.h

Index: chrome/browser/chromeos/ownership/owner_settings_service_factory.h
diff --git a/chrome/browser/chromeos/ownership/owner_settings_service_factory.h b/chrome/browser/chromeos/ownership/owner_settings_service_factory.h
index e98773a7732e9213b3dd6904b2d515e732f3f756..58de60d2a76e487cdf4c21906260f57dd125c04c 100644
--- a/chrome/browser/chromeos/ownership/owner_settings_service_factory.h
+++ b/chrome/browser/chromeos/ownership/owner_settings_service_factory.h
@@ -9,8 +9,10 @@
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "base/memory/singleton.h"
 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
+#include "components/ownership/owner_key_util.h"
 
 class KeyedService;
 class Profile;
@@ -25,6 +27,13 @@ class OwnerSettingsServiceFactory : public BrowserContextKeyedServiceFactory {
 
   static OwnerSettingsServiceFactory* GetInstance();
 
+  scoped_refptr<ownership::OwnerKeyUtil> GetOwnerKeyUtil();
+
+  void set_owner_key_util_for_testing(
+      const scoped_refptr<ownership::OwnerKeyUtil>& owner_key_util) {
+    owner_key_util_ = owner_key_util;

[erikwright (departed), 2014/09/02 19:13:56]

I'm not sure if it's appropriate to inline an assignment to a refptr. I'd guess
not. Which would also save you an include in this header.

[ygorshenin1, 2014/09/03 10:14:58]

Done.

+  }
+
  private:
   friend struct DefaultSingletonTraits<OwnerSettingsServiceFactory>;
 
@@ -40,6 +49,8 @@ class OwnerSettingsServiceFactory : public BrowserContextKeyedServiceFactory {
   virtual KeyedService* BuildServiceInstanceFor(
       content::BrowserContext* browser_context) const OVERRIDE;
 
+  scoped_refptr<ownership::OwnerKeyUtil> owner_key_util_;
+
   DISALLOW_COPY_AND_ASSIGN(OwnerSettingsServiceFactory);
 };