Introduce ash mojo interface for lock screen action handlers

ash/mojo_interface_factory.cc

Index: ash/mojo_interface_factory.cc
diff --git a/ash/mojo_interface_factory.cc b/ash/mojo_interface_factory.cc
index fc1f2b8ef027676821258b5f84f1a7149096439a..137c0108b7ea07e6db9ddf66ce3f904ac54a86c1 100644
--- a/ash/mojo_interface_factory.cc
+++ b/ash/mojo_interface_factory.cc
@@ -18,6 +18,7 @@
 #include "ash/system/locale/locale_notification_controller.h"
 #include "ash/system/network/vpn_list.h"
 #include "ash/system/tray/system_tray_controller.h"
+#include "ash/tray_action_handler/tray_action_handler_controller.h"
 #include "ash/wallpaper/wallpaper_controller.h"
 #include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "base/bind.h"
@@ -79,6 +80,12 @@ void BindTouchViewRequestOnMainThread(mojom::TouchViewManagerRequest request) {
   Shell::Get()->maximize_mode_controller()->BindRequest(std::move(request));
 }
 
+void BindTrayActionHandlerControllerRequestOnMainThread(
+    mojom::TrayActionHandlerControllerRequest request) {
+  Shell::Get()->tray_action_handler_controller()->BindRequest(
+      std::move(request));
+}
+
 void BindVpnListRequestOnMainThread(mojom::VpnListRequest request) {
   Shell::Get()->vpn_list()->BindRequest(std::move(request));
 }
@@ -120,6 +127,9 @@ void RegisterInterfaces(
                          main_thread_task_runner);
   registry->AddInterface(base::Bind(&BindTouchViewRequestOnMainThread),
                          main_thread_task_runner);
+  registry->AddInterface(
+      base::Bind(&BindTrayActionHandlerControllerRequestOnMainThread),
+      main_thread_task_runner);
   registry->AddInterface(base::Bind(&BindVpnListRequestOnMainThread),
                          main_thread_task_runner);
   registry->AddInterface(base::Bind(&BindWallpaperRequestOnMainThread),