[Sync] Start up immediately when entering the sync setup UI.

components/browser_sync/browser/profile_sync_service.cc

Index: components/browser_sync/browser/profile_sync_service.cc
diff --git a/components/browser_sync/browser/profile_sync_service.cc b/components/browser_sync/browser/profile_sync_service.cc
index 185438ffeec8539a0d2e08c2a38cb5cf7ff4b345..d493f566cbf4ff6bf7523ee652eedc930bafbe0d 100644
--- a/components/browser_sync/browser/profile_sync_service.cc
+++ b/components/browser_sync/browser/profile_sync_service.cc
@@ -1480,7 +1480,7 @@ void ProfileSyncService::SetSetupInProgress(bool setup_in_progress) {
   if (startup_controller_->IsSetupInProgress() == setup_in_progress)
     return;
 
-  startup_controller_->set_setup_in_progress(setup_in_progress);
+  startup_controller_->SetSetupInProgress(setup_in_progress);
   if (!setup_in_progress && IsBackendInitialized())
     ReconfigureDatatypeManager();
   NotifyObservers();