Make Hands-Off Zero-Touch Enrollment compatibile with tests

chrome/browser/chromeos/login/enrollment/enrollment_screen.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/login/enrollment/enrollment_screen.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/logging.h"
@@ skipping 39 matching lines @@
     "Enterprise.EnrollmentTime.Failure";
 const char * const kMetricEnrollmentTimeSuccess =
     "Enterprise.EnrollmentTime.Success";
 
 // Retry policy constants.
 constexpr int kInitialDelayMS = 4 * 1000;  // 4 seconds
 constexpr double kMultiplyFactor = 1.5;
 constexpr double kJitterFactor = 0.1;           // +/- 10% jitter
 constexpr int64_t kMaxDelayMS = 8 * 60 * 1000;  // 8 minutes
 
-// Helper function. Returns true if we are using Hands Off Enrollment.
-bool UsingHandsOffEnrollment() {
-  return policy::DeviceCloudPolicyManagerChromeOS::
-             GetZeroTouchEnrollmentMode() ==
-         policy::ZeroTouchEnrollmentMode::HANDS_OFF;
-}
-
 }  // namespace
 
 namespace chromeos {
 
 // static
 EnrollmentScreen* EnrollmentScreen::Get(ScreenManager* manager) {
   return static_cast<EnrollmentScreen*>(
       manager->GetScreen(OobeScreen::SCREEN_OOBE_ENROLLMENT));
 }
 
@@ skipping 314 matching lines @@
   if (elapsed_timer_)
     UMA_ENROLLMENT_TIME(kMetricEnrollmentTimeFailure, elapsed_timer_);
 }
 
 void EnrollmentScreen::JoinDomain(OnDomainJoinedCallback on_joined_callback) {
   on_joined_callback_ = std::move(on_joined_callback);
   view_->ShowAdJoin();
 }
 
 }  // namespace chromeos