Handle birthday errors by disabling sync and deleting sync data.

chrome/browser/sync/engine/all_status.cc

Index: chrome/browser/sync/engine/all_status.cc
===================================================================
--- chrome/browser/sync/engine/all_status.cc	(revision 52107)
+++ chrome/browser/sync/engine/all_status.cc	(working copy)
@@ -207,20 +207,14 @@
       lock.NotifyOverQuota();
       break;
     case SyncerEvent::REQUEST_SYNC_NUDGE:
-      lock.set_notify_plan(DONT_NOTIFY);
-      break;
     case SyncerEvent::PAUSED:
-      lock.set_notify_plan(DONT_NOTIFY);
-      break;
     case SyncerEvent::RESUMED:
-      lock.set_notify_plan(DONT_NOTIFY);
-      break;
     case SyncerEvent::WAITING_FOR_CONNECTION:
-      lock.set_notify_plan(DONT_NOTIFY);
-      break;
     case SyncerEvent::CONNECTED:
-      lock.set_notify_plan(DONT_NOTIFY);
-      break;
+    case SyncerEvent::STOP_SYNCING_PERMANENTLY:
+    case SyncerEvent::SYNCER_THREAD_EXITING:
+       lock.set_notify_plan(DONT_NOTIFY);
+       break;
     default:
       LOG(ERROR) << "Unrecognized Syncer Event: " << event.what_happened;
       lock.set_notify_plan(DONT_NOTIFY);