tree 5e669c5d06a4c61439bf453c6b20096dffd69138
parent ded21fc283ead61312bd276cf9558e7fe104c93b
author yunhanw <yunhanw@google.com> 1580333030 -0800
committer yunhanw <yunhanw@google.com> 1580333034 -0800

move StoreDataElement to private in TraitUpdatableDataSource

-- StoreDataElement in TraitUpdatableDataSource is only invoked by
SubscritpionEngine when processing update request, and
SubscritpionEngine is friend of TraitUpdatableDataSource, therefore
 move StoreDataElement to private.