Set up Cobalt build acceleration with RBE #17771

Job	Run time
android-arm / initialize	1m 18s
android-arm64 / initialize	1m 17s
android-x86 / initialize	1m 28s
chromium_android-arm / initialize	1m 14s
chromium_android-arm64 / initialize	1m 14s
chromium_android-x86 / initialize	1m 15s
chromium_android-arm / docker-build-image	3m 59s
chromium_android-x86 / docker-build-image	4m 1s
chromium_android-arm64 / docker-build-image	3m 52s
android-arm64 / docker-build-image	4m 7s
android-arm / docker-build-image	4m 8s
android-x86 / docker-build-image	3m 46s
chromium_android-arm64 / arm64_devel	1h 22m 57s
chromium_android-arm64 / arm64_qa	1h 5m 37s
chromium_android-arm64 / arm64_gold	1h 20m 43s
chromium_android-arm / arm_devel	53m 16s
chromium_android-arm / arm_qa	1h 3m 6s
chromium_android-arm / arm_gold	54m 58s
android-x86 / x86_devel	1h 18m 33s
android-x86 / x86_qa	1h 21m 58s
android-x86 / x86_gold	1h 0m 7s
chromium_android-x86 / x86_devel	1h 16m 48s
chromium_android-x86 / x86_qa	1h 10m 43s
chromium_android-x86 / x86_gold	1h 15m 28s
android-arm64 / arm64_devel	1h 24m 13s
android-arm64 / arm64_qa	1h 22m 25s
android-arm64 / arm64_gold	1h 23m 27s
android-arm / arm_devel	1h 3m 36s
android-arm / arm_qa	1h 0m 36s
android-arm / arm_gold	1h 9m 43s
chromium_android-arm / ${{ matrix.name }}_tests	0s
android-arm / arm_tests	1m 25s
chromium_android-x86 / ${{ matrix.name }}_tests	0s
android-x86 / ${{ matrix.name }}_tests	0s
chromium_android-arm64 / ${{ matrix.name }}_tests	0s
android-arm64 / arm64_tests	1m 28s
	22h 2m 46s

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