webbrowser-app not recognize google-talkplugin installed

[Anderson Moreira de Souza]

When calling Google+ the unity-webapps-googleplus, the webbrowser-app browser does not recognize the plugins needed to run the video conference function, closing the current window hangouts and opening new window in Firefox browser requesting the installation of plugins, although they are already installed.

In Firefox, Google Chrome and Chromium, the video conference works perfectly with sound and image from webcam.

Description: Ubuntu 14.04.1 LTS
Release: 14.04

webbrowser-app:
  Instalado: 0.23+14.04.20140428-0ubuntu1
  Candidato: 0.23+14.04.20140428-0ubuntu1
  Tabela de versão:
 *** 0.23+14.04.20140428-0ubuntu1 0
        500 http://br.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     0.23+14.04.20140414-0ubuntu1 0
        500 http://br.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

unity-webapps-googleplus:
  Instalado: 2.4.17+14.04.20140422-0ubuntu1.1
  Candidato: 2.4.17+14.04.20140422-0ubuntu1.1
  Tabela de versão:
 *** 2.4.17+14.04.20140422-0ubuntu1.1 0
        500 http://br.archive.ubuntu.com/ubuntu/ trusty-updates/universe amd64 Packages
        100 /var/lib/dpkg/status
     2.4.17+14.04.20140409-0ubuntu1 0
        500 http://br.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages

google-talkplugin:
  Instalado: 5.4.2.0-1
  Candidato: 5.4.2.0-1
  Tabela de versão:
 *** 5.4.2.0-1 0
        500 http://dl.google.com/linux/talkplugin/deb/ stable/main amd64 Packages
        100 /var/lib/dpkg/status