The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/663bdb216fc90132e85a40649d8c04c62cbf29bb

commit 663bdb216fc90132e85a40649d8c04c62cbf29bb
Author: gambard <gambard@chromium.org>
Date: Fri Mar 17 12:21:12 2017

Add header for the Content Suggestions

This CL adds headers for the Content Suggestions sections.

BUG= 702236 

Review-Url: https://codereview.chromium.org/2751653008
Cr-Commit-Position: refs/heads/master@{#457738}

[modify] https://crrev.com/663bdb216fc90132e85a40649d8c04c62cbf29bb/ios/chrome/browser/ui/content_suggestions/content_suggestions_collection_updater.mm
[modify] https://crrev.com/663bdb216fc90132e85a40649d8c04c62cbf29bb/ios/chrome/browser/ui/content_suggestions/content_suggestions_footer_item.h
[modify] https://crrev.com/663bdb216fc90132e85a40649d8c04c62cbf29bb/ios/chrome/browser/ui/content_suggestions/content_suggestions_footer_item.mm
[modify] https://crrev.com/663bdb216fc90132e85a40649d8c04c62cbf29bb/ios/chrome/browser/ui/content_suggestions/content_suggestions_view_controller.mm