I'm having a similar problem, though I haven't seen the Chrome Canary folders. I've tried two things now (one in the last few minutes, so let's see if it works this time).
First, open Applications > Utilities > Terminal and copy/paste the following:
sudo rm -rf 2014*
At this point you will be prompted for a password. Enter the password you use to login to your Mac.
Then copy/paste this line:
You should have a Finder window popup. On the sidebar, click on your computer's name and make sure that you don't see any of the Google/Chrome folders.
Second, uninstall the Google Voice and Video plugin. It can be reinstalled if needed in the future, but the uninstall/reinstall process seems to prevent these volumes from showing up again for some people.
Again in Terminal, copy/paste the following:
Press Enter and a dock icon should appear, along with a small window requesting credentials. Enter your Mac login password again and after a minute, it should tell you that Google Voice and Video was uninstalled.
You may have luck with uninstalling and reinstalling Chrome Canary if this didn't fix those folders.