Notify Files App when ARC++ app is installed/removed

chrome/browser/chromeos/extensions/file_manager/event_router.cc

Index: chrome/browser/chromeos/extensions/file_manager/event_router.cc
diff --git a/chrome/browser/chromeos/extensions/file_manager/event_router.cc b/chrome/browser/chromeos/extensions/file_manager/event_router.cc
index 2b78461c5a07ff58cbacdfa590ab0b40537a8eae..2e8203a87e8018e8c67bf718f9271cb49cd5290c 100644
--- a/chrome/browser/chromeos/extensions/file_manager/event_router.cc
+++ b/chrome/browser/chromeos/extensions/file_manager/event_router.cc
@@ -6,6 +6,7 @@
 
 #include <stddef.h>
 
+#include <set>
 #include <utility>
 
 #include "base/bind.h"
@@ -17,6 +18,7 @@
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "chrome/browser/app_mode/app_mode_utils.h"
+#include "chrome/browser/chromeos/arc/arc_session_manager.h"
 #include "chrome/browser/chromeos/drive/drive_integration_service.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
 #include "chrome/browser/chromeos/extensions/file_manager/private_api_util.h"
@@ -397,11 +399,22 @@ EventRouter::EventRouter(Profile* profile)
   ObserveEvents();
 }
 
-EventRouter::~EventRouter() {
+EventRouter::~EventRouter() = default;
+
+void EventRouter::OnAppsUpdated() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  BroadcastEvent(profile_,
+                 extensions::events::FILE_MANAGER_PRIVATE_ON_APPS_UPDATED,
+                 file_manager_private::OnAppsUpdated::kEventName,
+                 file_manager_private::OnAppsUpdated::Create());
 }
 
 void EventRouter::Shutdown() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  if (arc::ArcServiceManager::IsInitialized())
+    arc::ArcServiceManager::Get()->RemoveObserver(this);
+
   chromeos::system::TimezoneSettings::GetInstance()->RemoveObserver(this);
 
   DLOG_IF(WARNING, !file_watchers_.empty())
@@ -492,6 +505,9 @@ void EventRouter::ObserveEvents() {
   pref_change_registrar_->Add(prefs::kUse24HourClock, callback);
 
   chromeos::system::TimezoneSettings::GetInstance()->AddObserver(this);
+
+  if (arc::ArcSessionManager::IsAllowedForProfile(profile_))
+    arc::ArcServiceManager::Get()->AddObserver(this);
 }
 
 // File watch setup routines.