Log Message:
adobe-flash-player: update to 31.0.0.122.

Upstream announcemnet:

https://helpx.adobe.com/security/products/flash-player/apsb18-35.html

Adobe Security Bulletin
 Security updates available for Flash Player | APSB18-35

  Summary

  Adobe has released updates for Adobe Flash Player for Windows, macOS,
  Linux and Chrome OS.  These updates address feature and performance
  bugs, and do not include security fixes.