Howto: Chromium Browser On Linux With Flash

Now to get Flash running, we basically need to create a symbolic link of libflashplayer.so in the Chromium plugin folder:
cd /usr/lib/chromium-browser/plugins
sudo ln -s ../../flashplugin-installer/libflashplayer.so

One final step is to change the execution command to your Chromium icon to this (Note these flags have two “-”, for some reason WordPress is rendering only one):
chromium-browser --enable-plugins --enable-greasemonkey --enable-user-scripts --enable-extensions

Ref: http://linuxologist.com/1-general/howto-chromium-browser-on-linux-with-flash/