from https://discussions.apple.com/thread/3767938?start=0&tstart=0
open up the Activity Monitor in Utilities and have the Adobe Uninstaller open at the same time.
With both windows open on the desktop for easy access to both, double-click on the Google Chrome Helper process in the Process Manager window.
You are given the option to quit. DON'T QUIT YET. You need to be ready to immediately hit the button to uninstall Adobe in the uninstaller.
As soon as you click the "Quit" (not Force Quit) button in the Activity Monitor, really fast mouse over to the Adobe Uninstaller and hit the uninstall button.
It may take a couple of times to get the timing down in order to get the uninstaller started.