olly 4abaaf138c Remove DownloadConstructorHelper
Something that helps a constructor always seemed a bit strange.
It's now possible to use CacheDataSource.Factory directly instead.

PiperOrigin-RevId: 307661930
2020-04-27 10:39:34 +01:00
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2020-04-27 10:39:34 +01:00
2020-04-27 10:39:34 +01:00