Gating Capping heavy pages to data saver users

Only data saver users should see the capping heavy pages InfoBar.

Bug: 864613
Change-Id: Id7a9c41ac0476b1df9a040e91865935440824162
Reviewed-on: https://chromium-review.googlesource.com/1140682
Commit-Queue: Ryan Sturm <ryansturm@chromium.org>
Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Reviewed-by: Ben Greenstein <bengr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575830}
4 files changed