Use mojo SystemTray interfaces for both mash and classic ash

ash/mus/window_manager_application.cc

 // Copyright 2015 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/mus/window_manager_application.h"
 
 #include <utility>
 
 #include "ash/common/material_design/material_design_controller.h"
+#include "ash/common/mojo_interface_factory.h"
 #include "ash/common/wm_shell.h"
 #include "ash/mus/accelerators/accelerator_registrar_impl.h"
 #include "ash/mus/native_widget_factory_mus.h"
 #include "ash/mus/shelf_delegate_mus.h"
 #include "ash/mus/wallpaper_delegate_mus.h"
 #include "ash/mus/window_manager.h"
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "services/shell/public/cpp/connection.h"
 #include "services/shell/public/cpp/connector.h"
 #include "services/tracing/public/cpp/provider.h"
 #include "services/ui/common/event_matcher_util.h"
 #include "services/ui/public/cpp/gpu_service.h"
 #include "services/ui/public/cpp/window.h"
 #include "services/ui/public/cpp/window_tree_client.h"
 #include "ui/aura/env.h"
 #include "ui/events/event.h"
 #include "ui/message_center/message_center.h"
 #include "ui/views/mus/aura_init.h"
 #include "ui/views/mus/surface_context_factory.h"
 
 #if defined(OS_CHROMEOS)
 #include "ash/common/system/chromeos/power/power_status.h"
-#include "ash/mus/system_tray_delegate_mus.h"
 #include "chromeos/audio/cras_audio_handler.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/network/network_handler.h"
 #include "chromeos/system/fake_statistics_provider.h"
 #include "device/bluetooth/dbus/bluez_dbus_manager.h"  // nogncheck
 #endif
 
 namespace ash {
 namespace mus {
 namespace {
@@ skipping 105 matching lines @@
 
   const size_t kMaxNumberThreads = 3u;  // Matches that of content.
   const char kThreadNamePrefix[] = "MashBlocking";
   blocking_pool_ = new base::SequencedWorkerPool(
       kMaxNumberThreads, kThreadNamePrefix, base::TaskPriority::USER_VISIBLE);
   InitWindowManager(std::move(window_tree_client), blocking_pool_);
 }
 
 bool WindowManagerApplication::OnConnect(const shell::Identity& remote_identity,
                                          shell::InterfaceRegistry* registry) {
+  // Register services used in both classic ash and mash.
+  mojo_interface_factory::RegisterInterfaces(
+      registry, base::ThreadTaskRunnerHandle::Get());
+
   registry->AddInterface<mojom::ShelfController>(this);
-  registry->AddInterface<mojom::SystemTray>(this);
   registry->AddInterface<mojom::WallpaperController>(this);
   registry->AddInterface<ui::mojom::AcceleratorRegistrar>(this);
   if (remote_identity.name() == "mojo:mash_session") {
     connector()->ConnectToInterface(remote_identity, &session_);
     session_->AddScreenlockStateListener(
         screenlock_state_listener_binding_.CreateInterfacePtrAndBind());
   }
   return true;
 }
 
 void WindowManagerApplication::Create(const shell::Identity& remote_identity,
                                       mojom::ShelfControllerRequest request) {
   mojom::ShelfController* shelf_controller =
       static_cast<ShelfDelegateMus*>(WmShell::Get()->shelf_delegate());
   DCHECK(shelf_controller);
   shelf_controller_bindings_.AddBinding(shelf_controller, std::move(request));
 }
 
-void WindowManagerApplication::Create(const shell::Identity& remote_identity,
-                                      mojom::SystemTrayRequest request) {
-#if defined(OS_CHROMEOS)
-  // Chrome-with-ash only runs on Chrome OS, so don't provide the SystemTray
-  // interface on other platforms.
-  mojom::SystemTray* system_tray = SystemTrayDelegateMus::Get();
-  DCHECK(system_tray);
-  system_tray_bindings_.AddBinding(system_tray, std::move(request));
-#endif
-}
-
 void WindowManagerApplication::Create(
     const ::shell::Identity& remote_identity,
     mojom::WallpaperControllerRequest request) {
   mojom::WallpaperController* wallpaper_controller =
       static_cast<WallpaperDelegateMus*>(WmShell::Get()->wallpaper_delegate());
   DCHECK(wallpaper_controller);
   wallpaper_controller_bindings_.AddBinding(wallpaper_controller,
                                             std::move(request));
 }
 
@@ skipping 15 matching lines @@
       base::Bind(&WindowManagerApplication::OnAcceleratorRegistrarDestroyed,
                  base::Unretained(this))));
 }
 
 void WindowManagerApplication::ScreenlockStateChanged(bool locked) {
   window_manager_->SetScreenLocked(locked);
 }
 
 }  // namespace mus
 }  // namespace ash