
(GitHub issue #1706) The media source allows adding or removing child sources before and after prepare() was called. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=160516636
(GitHub issue #1706) The media source allows adding or removing child sources before and after prepare() was called. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=160516636