Separate icons for Chrome and Hangouts in Unity

Open a terminal and edit the following files:

gedit $HOME/.local/share/applications/chrome-*&

Find the file corresponding to Hangouts and inside the file remove the following entry:

NoDisplay=true

Typically, the Hangouts file will have the following entry that you can use to identify it.

Name=Hangouts

You can also enable the rest of google applications like google drive, docs etc that are disabled by default. I hope it helps.

The contents of my Hangout file are listed below:

#!/usr/bin/env xdg-open
[Desktop Entry]
Version=1.0
Terminal=false
Type=Application
Name=Hangouts
Exec=/opt/google/chrome/google-chrome --profile-directory=Default --app-id=knipolnnllmklapflnccelgolnpehhpl
Icon=chrome-knipolnnllmklapflnccelgolnpehhpl-Default
StartupWMClass=crx_knipolnnllmklapflnccelgolnpehhpl

The file name and location is

$HOME/.local/share/applications/chrome-knipolnnllmklapflnccelgolnpehhpl-Default.desktop