Re-enable browse:news:cnn on Mac in system_health.common_desktop

Bug: 728576
Change-Id: I400c9f1a408f9840b00895683cf6a1d0f2b4ae4c
TBR: nednguyen@google.com
Reviewed-on: https://chromium-review.googlesource.com/1143142
Reviewed-by: Annie Sullivan <sullivan@chromium.org>
Commit-Queue: Annie Sullivan <sullivan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576597}
1 file changed