[Sync] Use OnSingleDataTypeUnrecoverableError for all errors

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 6ff5bf51d9f0d2418e833cb676b4e909cdb0efdb..7ac3794e179b1a286af8f8fa80983caa67ac1604 100644
--- a/chrome/browser/sync/profile_sync_service.h
+++ b/chrome/browser/sync/profile_sync_service.h
@@ -547,11 +547,6 @@ class ProfileSyncService : public ProfileSyncServiceBase,
       const tracked_objects::Location& from_here,
       const std::string& message) OVERRIDE;
 
-  // Called when a datatype wishes to disable itself. The datatype to be
-  // disabled is passed via |error.model_type()|. Note, this does not change
-  // preferred state of a datatype and is not persisted across restarts.
-  virtual void DisableDatatype(const syncer::SyncError& error);
-
   // Called to re-enable a type disabled by DisableDatatype(..). Note, this does
   // not change the preferred state of a datatype, and is not persisted across
   // restarts.