Merge branch...

Merge branch '1845-update-headless-chrome-blog-post-to-include-section-on-sitespeed-testing' into 'master'

Update headless chrome blog post to include section on Sitespeed testing

Closes #1845

See merge request gitlab-com/www-gitlab-com!9104

source/posts/2017-12-19-moving-to-headless-chrome.html.md

@@ -487,6 +487,12 @@ useful while working on this project.
 You can find all of the changes we made in [the original merge request page
 on GitLab.com](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/12244).
+## Additional uses for headless Chrome
+
+We have also been utilizing headless Chrome to analyze frontend performance, and have found it to be useful in detecting issues.
+
+We'd like to make it easier for other companies to embrace as well, so as part of the upcoming 10.3 release of GitLab we are releasing [Browser Performance Testing](https://docs.gitlab.com/ee/user/project/merge_requests/browser_performance_testing.html). Leveraging GitLab CI/CD, headless Chrome is launched against a set of pages and an overall performance score is calculated. Then for each merge request the scores are compared between the source and target branches, making it easier detect performance regressions prior to merge.
+
 ## Acknowledgements
 I sincerely hope this information will prove useful to anybody else looking to