Separate ash::test::DisplayManagerTestApi from ash

ash/display/display_configuration_controller.cc

 // Copyright 2016 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 "ash/display/display_configuration_controller.h"
 
 #include "ash/display/display_animator.h"
 #include "ash/display/display_manager.h"
 #include "ash/display/display_util.h"
 #include "ash/rotator/screen_rotation_animator.h"
-#include "ash/screen_util.h"
 #include "base/time/time.h"
 #include "ui/display/manager/display_layout.h"
 
 #if defined(OS_CHROMEOS)
 #include "ash/display/display_animator_chromeos.h"
 #include "base/sys_info.h"
 #include "grit/ash_strings.h"
 #endif
 
 namespace {
@@ skipping 148 matching lines @@
 }
 
 void DisplayConfigurationController::SetPrimaryDisplayIdImpl(
     int64_t display_id) {
   window_tree_host_manager_->SetPrimaryDisplayId(display_id);
   if (display_animator_)
     display_animator_->StartFadeInAnimation();
 }
 
 }  // namespace ash