Move SetUseOverrideRedirectWindowByDefault() to //ui/base.

ash/test/ash_test_helper.cc

 // Copyright 2013 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/test/ash_test_helper.h"
 
 #include "ash/accelerators/accelerator_controller_delegate_aura.h"
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/test/material_design_controller_test_api.h"
 #include "ash/common/test/test_session_state_delegate.h"
@@ skipping 13 matching lines @@
 #include "chromeos/audio/cras_audio_handler.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "device/bluetooth/bluetooth_adapter_factory.h"
 #include "device/bluetooth/dbus/bluez_dbus_manager.h"
 #include "ui/aura/env.h"
 #include "ui/aura/input_state_lookup.h"
 #include "ui/aura/test/env_test_helper.h"
 #include "ui/aura/test/event_generator_delegate_aura.h"
 #include "ui/base/ime/input_method_initializer.h"
 #include "ui/base/material_design/material_design_controller.h"
+#include "ui/base/platform_window_defaults.h"
 #include "ui/base/test/material_design_controller_test_api.h"
 #include "ui/compositor/scoped_animation_duration_scale_mode.h"
 #include "ui/compositor/test/context_factories_for_test.h"
 #include "ui/display/manager/managed_display_info.h"
 #include "ui/display/test/display_manager_test_api.h"
 #include "ui/message_center/message_center.h"
 #include "ui/wm/core/capture_controller.h"
 #include "ui/wm/core/cursor_manager.h"
 #include "ui/wm/core/wm_state.h"
 
-#if defined(USE_X11)
-#include "ui/aura/window_tree_host_x11.h"
-#endif
-
 namespace ash {
 namespace test {
 
 AshTestHelper::AshTestHelper(AshTestEnvironment* ash_test_environment)
     : ash_test_environment_(ash_test_environment),
       test_shell_delegate_(nullptr),
       test_screenshot_delegate_(nullptr),
       dbus_thread_manager_initialized_(false),
       bluez_dbus_manager_initialized_(false) {
-#if defined(USE_X11)
-  aura::test::SetUseOverrideRedirectWindowByDefault(true);
-#endif
+  ui::test::EnableTestConfigForPlatformWindows();
   aura::test::InitializeAuraEventGeneratorDelegate();
 }
 
 AshTestHelper::~AshTestHelper() {}
 
 void AshTestHelper::SetUp(bool start_session,
                           MaterialDesignController::Mode material_mode) {
   display::ResetDisplayIdForTest();
   wm_state_ = base::MakeUnique<::wm::WMState>();
   views_delegate_ = ash_test_environment_->CreateViewsDelegate();
@@ skipping 131 matching lines @@
 aura::Window* AshTestHelper::CurrentContext() {
   aura::Window* root_window = Shell::GetTargetRootWindow();
   if (!root_window)
     root_window = Shell::GetPrimaryRootWindow();
   DCHECK(root_window);
   return root_window;
 }
 
 }  // namespace test
 }  // namespace ash