detect preferences errors

chrome/browser/sync/glue/preference_change_processor.cc

Index: chrome/browser/sync/glue/preference_change_processor.cc
diff --git a/chrome/browser/sync/glue/preference_change_processor.cc b/chrome/browser/sync/glue/preference_change_processor.cc
index 921b30b0d49e1730ccac6ab06b0986dd7aed1209..1f7696faa4d5473c6955ebf0a7f80817db63d848 100644
--- a/chrome/browser/sync/glue/preference_change_processor.cc
+++ b/chrome/browser/sync/glue/preference_change_processor.cc
@@ -161,7 +161,7 @@ Value* PreferenceChangeProcessor::ReadPreference(
   scoped_ptr<Value> value(reader.JsonToValue(preference.value(), false, false));
   if (!value.get()) {
     LOG(ERROR) << "Failed to deserialize preference value: "
-               << reader.error_message();
+               << reader.GetErrorMessage();
     error_handler()->OnUnrecoverableError();
     return NULL;
   }