Revert^3 "Remove hidden System.arraycopy(byte[]...."

This reverts commit 301b2a86cdbaecf5969b2130190a5de94de63ad7.

Reason for revert: Some internal branches still use the prebuilt and broke.

Bug: 128267537
Change-Id: I6afc01b0966ed5d5339e29fa7d3b11eaa5d1b365
1 file changed