Log Message:
webkit-gtk: update to 2.20.2.

==================
WebKitGTK+  2.20.2
==================

What's new in WebKitGTK+ 2.20.2?

  - Do TLS error checking on GTlsConnection::accept-certificate to finish the \ 
load earlier in case of errors.
  - Properly close the connection to the nested wayland compositor in the Web \ 
Process.
  - Avoid painting backing stores for zero-opacity layers.
  - Fix downloads started by context menu failing in some websites due to \ 
missing user agent HTTP header.
  - Fix video unpause when GStreamerGL is disabled.
  - Fix several GObject introspection annotations.
  - Update user agent quiks to fix Outlook.com and Chase.com.
  - Fix several crashes and rendering issues.
  - Security fixes: CVE-2018-4200.