Revert "Revert "Make the JIT zygote memory shared.""

This reverts commit 2fef66b294417d447630f9d98de68227eef476d3.

Bug: 119800099
Bug: 136110523

Reason for revert: Fixed webview_zygote case.

Change-Id: Iaae8c999463d77b7b1e62b55458493bdbc97a104
11 files changed