[android] Refactor media_session_client #9717

Job	Run time
raspi-2 / initialize	38s
raspi-2-skia / initialize	28s
raspi-2-skia / docker-build-image	1m 19s
raspi-2-skia / docker-unittest-image	0s
raspi-2 / docker-build-image	1m 10s
raspi-2 / docker-unittest-image	0s
raspi-2 / raspi_devel	7m 45s
raspi-2 / raspi_debug	11m 48s
raspi-2 / raspi_qa	8m 38s
raspi-2 / raspi_gold	6m 47s
raspi-2 / sbversion-15_devel	8m 12s
raspi-2 / sbversion-15_debug	12m 14s
raspi-2 / sbversion-15_qa	6m 43s
raspi-2 / sbversion-15_gold	6m 51s
raspi-2-skia / raspi-2-skia_devel	8m 36s
raspi-2-skia / raspi-2-skia_debug	11m 33s
raspi-2-skia / raspi-2-skia_qa	7m 27s
raspi-2-skia / raspi-2-skia_gold	7m 2s
raspi-2-skia / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2-skia / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
raspi-2 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
	1h 47m 11s

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