Added affiliation IDs for the new affiliation determination.

chrome/browser/chromeos/login/users/mock_user_manager.h

Index: chrome/browser/chromeos/login/users/mock_user_manager.h
diff --git a/chrome/browser/chromeos/login/users/mock_user_manager.h b/chrome/browser/chromeos/login/users/mock_user_manager.h
index c7545bc6b6e7dcfbf8a7c085e3fb82fc20e23868..1d41794bd5c66067f166b4f8fefe16db39d524d5 100644
--- a/chrome/browser/chromeos/login/users/mock_user_manager.h
+++ b/chrome/browser/chromeos/login/users/mock_user_manager.h
@@ -95,6 +95,9 @@ class MockUserManager : public ChromeUserManager {
   MOCK_METHOD1(KioskAppLoggedIn, void(const std::string&));
   MOCK_METHOD1(PublicAccountUserLoggedIn, void(user_manager::User*));
   MOCK_METHOD1(SupervisedUserLoggedIn, void(const std::string&));
+  MOCK_METHOD2(SetUserAffiliation,
+               void(const std::string& user_id,
+                    const std::set<std::string>& user_affiliation_ids));
 
   // You can't mock these functions easily because nobody can create
   // User objects but the ChromeUserManager and us.