Add default member initializer for sandbox2::Executor::Process members
Add default member initializer for sandbox2::Executor::Process members

PiperOrigin-RevId: 440877694
Change-Id: I0899393b05d064cd8318e11eef796f89b3c0ad0e

google/sandboxed-api,google/sandboxed-api,google/sandboxed-api,google/sandboxed-api