GitLab

Original issue's description:
> [NTP Client] Use the separate button style for the NoArticles status
>
> Makes the articles and bookmarks sections use the same style of status
> card when they have no snippets.
>
> the hasMoreButton property of categories now only determines whether
> the action item will be shown when there are suggestions to display.
>
> This patch also lets the SuggestionsCategoryInfo be aware of the
> current category it is describing, and moves various category specific
> behaviours into the SuggestionsCategoryInfo class.
>
> Preview: https://goo.gl/photos/VhceT6cjvME6QS8m7
>
> BUG=649670
>
> Committed: https://crrev.com/ffa8e3905fed0b1df0d56ab6e4b17791b31cd171
> Cr-Commit-Position: refs/heads/master@{#423517}

> Revert Data:
> Committed: https://crrev.com/b5e8956c2c8a10484d10a117b3ef5a33ee58cb6c
> Cr-Commit-Position: refs/heads/master@{#423573}

BUG=649670

Review-Url: https://codereview.chromium.org/2401643004
Cr-Commit-Position: refs/heads/master@{#423863}