Remove explicit singletonness of ArcBridgeService part 3.

chrome/browser/ui/app_list/arc/arc_app_list_prefs.cc

Index: chrome/browser/ui/app_list/arc/arc_app_list_prefs.cc
diff --git a/chrome/browser/ui/app_list/arc/arc_app_list_prefs.cc b/chrome/browser/ui/app_list/arc/arc_app_list_prefs.cc
index c64051c808ef98c0c64b046574872f9625663c70..94a51256aa007911f9e3592b281f8b7e8faec288 100644
--- a/chrome/browser/ui/app_list/arc/arc_app_list_prefs.cc
+++ b/chrome/browser/ui/app_list/arc/arc_app_list_prefs.cc
@@ -21,7 +21,7 @@
 #include "chrome/browser/ui/app_list/arc/arc_package_syncable_service.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/grit/generated_resources.h"
-#include "components/arc/arc_bridge_service.h"
+#include "components/arc/arc_service_manager.h"
 #include "components/crx_file/id_util.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/prefs/scoped_user_pref_update.h"
@@ -255,11 +255,10 @@ ArcAppListPrefs::ArcAppListPrefs(
 }
 
 ArcAppListPrefs::~ArcAppListPrefs() {
-  // A reference to ArcBridgeService is kept here so that it would crash the
-  // tests where ArcBridgeService and ArcAppListPrefs are not destroyed in right
-  // order.
-  arc::ArcBridgeService* bridge_service = arc::ArcBridgeService::Get();
-  if (bridge_service)
+  // A reference to ArcServiceManager is kept here so that it would crash the
+  // tests where ArcServiceManager and ArcAppListPrefs are not destroyed in
+  // right order.
+  if (arc::ArcServiceManager::Get())
     app_instance_holder_->RemoveObserver(this);
 
   arc::ArcSessionManager* arc_session_manager = arc::ArcSessionManager::Get();