I tried to install it directly from the software center but on installing it I got this message in the terminal
Package adobe-flashplugin is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or is only available from another source
E: Package 'adobe-flashplugin' has no installation candidate
Please Help...
You do not need to install flash to Google Chrome. It is already there.
NPAPI plugin will not work, and pepperflash is already installed in Chrome.
Since, Google Chrome is not an open source software therefore these plugins won't work it. If you still want to use Google Chrome you can try Chromium Browser which is available in ubuntu software center which exactly works like Google chrome but with some pros. To setup adobe flash player plugin is simple sudo apt-get update
sudo apt-get install adobe-flashplugin
Or you can try installing pepper plugin
sudo apt-get install pepperflashplugin-nonfree
sudo update-pepperflashplugin-nonfree --install
