Cherry pick PR #1402: [media] Create CDM with valid WidevineStorage #1262

Job	Run time
raspi-2 / initialize	35s
raspi-2-skia / initialize	37s
raspi-2 / docker-build-image	32s
raspi-2 / docker-unittest-image	0s
raspi-2-skia / docker-build-image	32s
raspi-2-skia / docker-unittest-image	0s
raspi-2 / raspi_devel	8m 12s
raspi-2 / raspi_debug	10m 54s
raspi-2 / raspi_qa	8m 2s
raspi-2 / raspi_gold	7m 14s
raspi-2 / sbversion-15_devel	8m 13s
raspi-2 / sbversion-15_debug	11m 32s
raspi-2 / sbversion-15_qa	6m 50s
raspi-2 / sbversion-15_gold	6m 56s
raspi-2-skia / raspi-2-skia_devel	7m 23s
raspi-2-skia / raspi-2-skia_debug	11m 0s
raspi-2-skia / raspi-2-skia_qa	7m 18s
raspi-2-skia / raspi-2-skia_gold	7m 3s
raspi-2-skia / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2-skia / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
raspi-2-skia / on-host-unit-test-report	0s
raspi-2 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
raspi-2 / on-host-unit-test-report	0s
	1h 42m 53s

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