cros: Adds ShellPort functions for simplified display mode

ash/aura/shell_port_classic.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/aura/shell_port_classic.h"
 
 #include <utility>
 
 #include "ash/accelerators/accelerator_controller.h"
 #include "ash/accelerators/accelerator_controller_delegate_aura.h"
@@ skipping 26 matching lines @@
 #include "base/memory/ptr_util.h"
 #include "ui/aura/env.h"
 #include "ui/display/manager/display_manager.h"
 
 #if defined(USE_X11)
 #include "ash/wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_x11.h"
 #endif
 
 #if defined(USE_OZONE)
 #include "ash/wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_ozone.h"
+#include "ui/display/types/native_display_delegate.h"
+#include "ui/ozone/public/ozone_platform.h"
 #endif
 
 namespace ash {
 
 ShellPortClassic::ShellPortClassic() {}
 
 ShellPortClassic::~ShellPortClassic() {}
 
 // static
 ShellPortClassic* ShellPortClassic::Get() {
@@ skipping 175 matching lines @@
 }
 
 void ShellPortClassic::SetPartialMagnifierEnabled(bool enabled) {
   Shell::Get()->partial_magnification_controller()->SetEnabled(enabled);
 }
 
 void ShellPortClassic::CreatePointerWatcherAdapter() {
   pointer_watcher_adapter_ = base::MakeUnique<PointerWatcherAdapter>();
 }
 
+AshWindowTreeHost* ShellPortClassic::CreateAshWindowTreeHost(
+    const AshWindowTreeHostInitParams& init_params) {
+  // A return value of null results in falling back to the default.
+  return nullptr;
+}
+
 void ShellPortClassic::CreatePrimaryHost() {
   Shell::Get()->window_tree_host_manager()->Start();
   AshWindowTreeHostInitParams ash_init_params;
   Shell::Get()->window_tree_host_manager()->CreatePrimaryHost(ash_init_params);
 }
 
 void ShellPortClassic::InitHosts(const ShellInitParams& init_params) {
   Shell::Get()->window_tree_host_manager()->InitHosts();
 }
 
+std::unique_ptr<display::NativeDisplayDelegate>
+ShellPortClassic::CreateNativeDisplayDelegate() {
+  return ui::OzonePlatform::GetInstance()->CreateNativeDisplayDelegate();
+}
+
 std::unique_ptr<AcceleratorController>
 ShellPortClassic::CreateAcceleratorController() {
   DCHECK(!accelerator_controller_delegate_);
   accelerator_controller_delegate_ =
       base::MakeUnique<AcceleratorControllerDelegateAura>();
   return base::MakeUnique<AcceleratorController>(
       accelerator_controller_delegate_.get(), nullptr);
 }
 
 void ShellPortClassic::OnDisplayConfigurationChanging() {
   for (auto& observer : display_observers_)
     observer.OnDisplayConfigurationChanging();
 }
 
 void ShellPortClassic::OnDisplayConfigurationChanged() {
   for (auto& observer : display_observers_)
     observer.OnDisplayConfigurationChanged();
 }
 
 }  // namespace ash