Treat SyncCredentialsLost as an auth error

chrome/browser/sync/profile_sync_service.h

Index: chrome/browser/sync/profile_sync_service.h
diff --git a/chrome/browser/sync/profile_sync_service.h b/chrome/browser/sync/profile_sync_service.h
index 0007b6ac951e582079b6282514a64d3df15d8cdd..b0b649c24ee7f468cddd5748ccbbd621a6002889 100644
--- a/chrome/browser/sync/profile_sync_service.h
+++ b/chrome/browser/sync/profile_sync_service.h
@@ -180,9 +180,13 @@ class ProfileSyncService : public browser_sync::SyncFrontend,
 
   void RegisterAuthNotifications();
 
+  // Returns true if sync is enabled/not suppressed and the user is logged in.
+  // Virtual to enable mocking in tests.

[Nicolas Zea, 2012/05/15 23:39:04]

Mention that being logged in does not necessarily mean tokens are available?

[Andrew T Wilson (Slow), 2012/05/16 01:05:16]

Done.

+  virtual bool IsSyncEnabledAndLoggedIn();
+
   // Return whether all sync tokens are loaded and available for the backend to
   // start up. Virtual to enable mocking in tests.
-  virtual bool AreCredentialsAvailable();
+  virtual bool IsSyncTokenAvailable();
 
   // Registers a data type controller with the sync service.  This
   // makes the data type controller available for use, it does not