Go into the chrome os terminale and type in the following commands:
shell
sudo iptables -I INPUT -p udp --dport 27031 -j ACCEPT
sudo iptables -I INPUT -p udp --dport 27036 -j ACCEPT
sudo iptables -I INPUT -p tcp --dport 27036 -j ACCEPT
sudo iptables -I INPUT -p tcp --dport 27037 -j ACCEPT

Then run ubuntu and start streaming.

In new versions Chrome OS you can now transfer files from your android device to your computer.

Original article (http://www.omgchrome.com/android-file-transfer-mrp-chrome-os/)