Cherry pick PR #3277: pre-app recommendation cobalt platform service reference code #274

Job	Run time
raspi-2 / initialize	46s
raspi-2-skia / initialize	47s
raspi-2 / docker-build-image	1m 24s
raspi-2 / docker-unittest-image	0s
raspi-2-skia / docker-build-image	1m 34s
raspi-2-skia / docker-unittest-image	0s
raspi-2 / raspi_devel	9m 15s
raspi-2 / raspi_debug	12m 45s
raspi-2 / raspi_qa	7m 45s
raspi-2 / raspi_gold	7m 34s
raspi-2 / sbversion-15_devel	9m 9s
raspi-2 / sbversion-15_debug	13m 3s
raspi-2 / sbversion-15_qa	7m 53s
raspi-2 / sbversion-15_gold	8m 26s
raspi-2-skia / raspi-2-skia_devel	9m 9s
raspi-2-skia / raspi-2-skia_debug	12m 14s
raspi-2-skia / raspi-2-skia_qa	7m 35s
raspi-2-skia / raspi-2-skia_gold	7m 40s
raspi-2-skia / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
raspi-2-skia / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
raspi-2 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
	1h 56m 59s

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