Move UI update logic out of onFolderUpdated

Since folder is essentially immutable once it's loaded, let's remove
the logic of updating search result header out of onFolderUpdated since
we are already doing it in onCursorUpdated (which will also have the
newest value).

b/14275452

Change-Id: I18b83fd172c103f637d075e1593277f82573bb3c
1 file changed