Revert "Roll isolate go to binaries as generated by infra @ 6f3db5a82956."

This reverts commit a7ce77dda519428ce58039382485c7cd0cc05ab7. Monitoring tells
us severely regressed isolate performance.

TBR=jam@chromium.org
BUG=644410

Review-Url: https://codereview.chromium.org/2344563003
Cr-Original-Commit-Position: refs/heads/master@{#418639}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 07ac77f394925721fbeee21d94644a754fcc6025
3 files changed