Change record status: 
Project: 
Introduced in branch: 
8.1.x
Introduced in version: 
8.1.2
Description: 

ckeditor_stylesheets can now refer to external URLs to be added in order to add external CSS to CKEditor iframe instances. The primary use case for this: webfonts. Both absolute and protocol-relative URLs are allowed.

Before

ckeditor_stylesheets:
  - css/ckeditor-iframe.css

After

ckeditor_stylesheets:
  - css/ckeditor-iframe.css
  - http://www.example.com/style.css
  - //www.example.com/style.css
Impacts: 
Themers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done