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Commit 2bb02ec6 authored by John Spurlock's avatar John Spurlock
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AudioService: Migrate index map to SparseIntArray. 

 - Use SparseIntArray instead of a generic hash map.
 - Avoids unnecessary boxing/unboxing.
 - Avoids unnecessary allocation for iterator temp objects.
 - Provides deterministic dumping (by ascending device order).

Change-Id: If5ca5edd94af90cfed65ecbbbc1f4929f50ab6e9
parent 3062e570
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