[DataStore] Support backup data with compression

Bug: 325144964
Test: Manual tests
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:23821a69f31c5712cb369bfdd7776a66926dc5ac)
Merged-In: Id73a30c2b58fafa6d9d1cbe247a6d9c38397394b
Change-Id: Id73a30c2b58fafa6d9d1cbe247a6d9c38397394b
1 file changed