[Sync] Refactor sync datatype error handling.

chrome/browser/sync/glue/typed_url_model_associator.h

Index: chrome/browser/sync/glue/typed_url_model_associator.h
diff --git a/chrome/browser/sync/glue/typed_url_model_associator.h b/chrome/browser/sync/glue/typed_url_model_associator.h
index fb75550ff131db4dd58b3e8206f47c2d5f2c5484..ae4c5c180ae852625047727676f8e4f10132f2e1 100644
--- a/chrome/browser/sync/glue/typed_url_model_associator.h
+++ b/chrome/browser/sync/glue/typed_url_model_associator.h
@@ -61,13 +61,13 @@ class TypedUrlModelAssociator
   // PerDataTypeAssociatorInterface implementation.
   //
   // Iterates through the sync model looking for matched pairs of items.
-  virtual bool AssociateModels();
+  virtual bool AssociateModels(SyncError* error);
 
   // Delete all typed url nodes.
   bool DeleteAllNodes(sync_api::WriteTransaction* trans);
 
   // Clears all associations.
-  virtual bool DisassociateModels();
+  virtual bool DisassociateModels(SyncError* error);
 
   // The has_nodes out param is true if the sync model has nodes other
   // than the permanent tagged nodes.