v8: add GCProfiler support for erm #2168

Job	Run time
Build slim tarball	1m 33s
aarch64-darwin: with shared libraries	2h 33m 38s
aarch64-linux: with shared libraries	1h 27m 58s
x86_64-linux: with shared libraries	2h 5m 10s
x86_64-darwin: with shared libraries	3h 0m 10s
	9h 8m 29s

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