I had the issue where it was not possible to launch Google Chrome. It would bounce in the dock forever without actually starting. Trashing the application and associated files (with Hazel) did not work.
Other people had the same problem:
The following instructions will help get Chrome back up and running.
The solution to this issue is to remove all application settings. Start a terminal:
cd "/Users/`whoami`/Library/Application Support/Google"
mv Chrome Chrome.old
open "/Users/`whoami`/Library/Application Support/Google"
Now start Chrome. If it starts correctly, trash the Chrome.old folder.
Restoring the folder
If the fix did not work in your case, use the following commands to restore the original folder.
rm -rf Chrome
mv Chrome.old Chrome