cryptohome: Move stateless wrapper functions out of CryptohomeLibrary

chrome/browser/chromeos/policy/enterprise_install_attributes.h

Index: chrome/browser/chromeos/policy/enterprise_install_attributes.h
diff --git a/chrome/browser/chromeos/policy/enterprise_install_attributes.h b/chrome/browser/chromeos/policy/enterprise_install_attributes.h
index fdb80a0104afe102cc25322816ae2fd0311a687e..ab67ed1678f3ef5529d9fb8b4da5c8a4281c3f97 100644
--- a/chrome/browser/chromeos/policy/enterprise_install_attributes.h
+++ b/chrome/browser/chromeos/policy/enterprise_install_attributes.h
@@ -54,8 +54,7 @@ class EnterpriseInstallAttributes {
   static const char kAttrEnterpriseUser[];
   static const char kAttrConsumerKioskEnabled[];
 
-  EnterpriseInstallAttributes(
-      chromeos::CryptohomeLibrary* cryptohome,
+  explicit EnterpriseInstallAttributes(
       chromeos::CryptohomeClient* cryptohome_client);
   ~EnterpriseInstallAttributes();
 
@@ -134,7 +133,6 @@ class EnterpriseInstallAttributes {
   void OnReadImmutableAttributes(const std::string& user,
                                  const LockResultCallback& callback);
 
-  chromeos::CryptohomeLibrary* cryptohome_;
   chromeos::CryptohomeClient* cryptohome_client_;
 
   base::WeakPtrFactory<EnterpriseInstallAttributes> weak_ptr_factory_;