GitLab

Rename key_mobile_sites_cycler -> key_mobile_sites (all the pages do not run any
page interactions).

Rename key_mobile_sites.json -> key_mobile_sites_smooth.json
Rename key_mobile_sites_cycler.json -> key_mobile_sites.json

BUG=418375

Review URL: https://codereview.chromium.org/927763002

Cr-Commit-Position: refs/heads/master@{#316390}