- MediaSourceTestRunner aims to encapsulate some of the logic
currently used in DynamicConcatenatingMediaSourceTest, so it
can be re-used for testing other MediaSource implementations.
- The change also fixes DynamicConcatenatingMediaSourceTest to
execute calls on the correct threads, and to release handler
threads at the end of each test.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=176117535
