GitLab

This adds a new option for computing a value by checking
whether or not a string value is empty.

Bug: None
Change-Id: I2f1a18cde4dd9add1e300621d70c27ebe61369b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2537353
Commit-Queue: Sandro Maggi <sandromaggi@google.com>
Reviewed-by: Clemens Arbesser <arbesser@google.com>
Cr-Commit-Position: refs/heads/master@{#828223}