Add "kiosk_only" manifest attribute for platform apps.

chrome/browser/chromeos/login/fake_user_manager.h

Index: chrome/browser/chromeos/login/fake_user_manager.h
diff --git a/chrome/browser/chromeos/login/fake_user_manager.h b/chrome/browser/chromeos/login/fake_user_manager.h
index 3d01896921aff8de29803372d68fd2bc0c56f05e..d67c60ec502a604a950048b8db34c7f0117a34a7 100644
--- a/chrome/browser/chromeos/login/fake_user_manager.h
+++ b/chrome/browser/chromeos/login/fake_user_manager.h
@@ -24,6 +24,12 @@ class FakeUserManager : public UserManager {
   // Create and add a new user.
   void AddUser(const std::string& email);
 
+  // Create and add a kiosk app user.
+  void AddKioskAppUser(const std::string& kiosk_app_username);
+
+  // Helper helper function to UserLoggedIn override.
+  void UserLoggedIn(const std::string& email);
+
   // UserManager overrides.
   virtual const UserList& GetUsers() const OVERRIDE;
   virtual UserList GetUsersAdmittedForMultiProfile() const OVERRIDE;
@@ -125,6 +131,9 @@ class FakeUserManager : public UserManager {
       OVERRIDE;
 
  private:
+  // We use this internal function for const-correctness.
+  User* GetActiveUserInternal() const;
+
   UserList user_list_;
   UserList logged_in_users_;
   std::string owner_email_;