[Sync] Avoid unregistering object IDs on shutdown

chrome/browser/sync/glue/bridged_sync_notifier.cc

Index: chrome/browser/sync/glue/bridged_sync_notifier.cc
diff --git a/chrome/browser/sync/glue/bridged_sync_notifier.cc b/chrome/browser/sync/glue/bridged_sync_notifier.cc
index 5e3f669937da088a6d12e30bb9938886a34af1fe..f50c80ce74cb734129ea9dd77b2ce258b43bd28d 100644
--- a/chrome/browser/sync/glue/bridged_sync_notifier.cc
+++ b/chrome/browser/sync/glue/bridged_sync_notifier.cc
@@ -18,12 +18,19 @@ BridgedSyncNotifier::BridgedSyncNotifier(
 BridgedSyncNotifier::~BridgedSyncNotifier() {
 }
 
+void BridgedSyncNotifier::SetHandler(const std::string& handler_name,
+                                     syncer::SyncNotifierObserver* handler) {
+  if (delegate_.get())
+    delegate_->SetHandler(handler_name, handler);
+  bridge_->SetHandler(handler_name, handler);
+}
+
 void BridgedSyncNotifier::UpdateRegisteredIds(
-    syncer::SyncNotifierObserver* handler,
+    const std::string& handler_name,
     const syncer::ObjectIdSet& ids) {
   if (delegate_.get())
-   delegate_->UpdateRegisteredIds(handler, ids);
-  bridge_->UpdateRegisteredIds(handler, ids);
+    delegate_->UpdateRegisteredIds(handler_name, ids);
+  bridge_->UpdateRegisteredIds(handler_name, ids);
 }
 
 void BridgedSyncNotifier::SetUniqueId(const std::string& unique_id) {