Pass vizier rc parameter values with range check

This is similar to the change:
https://chromium-review.googlesource.com/c/webm/libvpx/+/2771081
Which fails libvpx nightly test.

Here we add range check to get rid of the warning of
"divided by zero".

BUG=webm:1723

Change-Id: I7712efe7abd4b11cdb725643d51fd1c0a300d924
2 files changed