I came across a similar issue but instead of changing the regedit I decided to change the Chrome settings
Try the following steps
chrome://plugins/
+ Details
(top right corner) to expand all the plugin details.Java
and click on Disable
for the path(s) that you don't want to be used.You might have to restart the browser to see the changes. This also assumes that the Java that you have enabled is the latest Java.
Hope this helps