-Check if Worker is null -Add test case Bug: 154875482 Test: make -j50 RunSettingsRoboTests Change-Id: I84572ef77cc9a48c3133d96fd2255754bc1cf67c
Bug: 154578656 Test: make -j50 RunSettingsRoboTests ROBOTEST_FILTER=MediaOutputGroupSliceTest make -j50 RunSettingsRoboTests ROBOTEST_FILTER=MediaOutputSliceTest Change-Id: If675c27ac412c2a49f9ed1c9b71a84c172f54fd6
-Add group operation slice to edit the group and do the volume adjustment -Add grouping API in slice worker -Add test cases Bug: 146813761 Test: make -j42 RunSettingsRoboTests Change-Id: Ide0df5e3934bc8ac68aaa67fcbd6173a4454ac7f