GitLab

The feature was already shipped, and there is no relevant trial
on trunk source code.

Note: This configuration looks wrong. Since the study used FeatureList
API, it should have an enable_features field to enable it correctly.

BUG=n/a

Review-Url: https://codereview.chromium.org/2046463002
Cr-Commit-Position: refs/heads/master@{#398136}