Chrome Version       : Chromium 69.0.3452.0
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL, along with the version, after other browsers where you
have tested this issue:
     Chrome: 67.0.3396.87 (Not headless version)
     Safari:
    Firefox: 60.0.2
       Edge:

What steps will reproduce the problem?
(1) Add CSS property "white-space: pre-line" to any text element.
(2) Add a break-line character (\n) to this text element.
(3) Take a screenshot of the website (Using headless version).

What is the expected result?
It should break a line for every \n inserted on the text.

What happens instead?
It doesnt break the line.

Please provide any additional information below. Attach a screenshot if
possible.
This only affects to the Headless version of Chromium.