[Sync] Maintain a global_id mapping to update UserEvents that references navigations

ios/chrome/browser/sync/ios_user_event_service_factory.cc

Index: ios/chrome/browser/sync/ios_user_event_service_factory.cc
diff --git a/ios/chrome/browser/sync/ios_user_event_service_factory.cc b/ios/chrome/browser/sync/ios_user_event_service_factory.cc
index dcca1a85fd9193e850ab6be302988cfefd5ae667..1782505d46fb6b816d2ba4a36f44c42dcb9a4035 100644
--- a/ios/chrome/browser/sync/ios_user_event_service_factory.cc
+++ b/ios/chrome/browser/sync/ios_user_event_service_factory.cc
@@ -55,11 +55,13 @@ IOSUserEventServiceFactory::BuildServiceInstanceFor(
       base::BindRepeating(&syncer::ModelTypeChangeProcessor::Create,
                           base::BindRepeating(&syncer::ReportUnrecoverableError,
                                               ::GetChannel()));
+  syncer::SyncService* sync_service =
+      ios::ChromeBrowserState::FromBrowserState(browser_state));
   auto bridge = base::MakeUnique<syncer::UserEventSyncBridge>(
-      std::move(store_factory), std::move(processor_factory));
+      std::move(store_factory), std::move(processor_factory),
+      sync_service->GetGlobalIdMapper());
   return base::MakeUnique<syncer::UserEventServiceImpl>(
-      IOSChromeProfileSyncServiceFactory::GetForBrowserState(
-          ios::ChromeBrowserState::FromBrowserState(browser_state)),
+      IOSChromeProfileSyncServiceFactory::GetForBrowserState(sync_service,
       std::move(bridge));
 }