Create a registry key:

Create a new string value.  If there are no string values present in the key, name the new value 1 (otherwise increment the highest number).  Set the value of the string to

Alternatively, you may use the Group Policy template provided by Google to set the ExtensionInstallForceList to contain the above string.  For a more detailed tutorial on configuring Group Policy for Chrome, see here.

You can use managed preferences to install the StatKey App in Chrome.  In Workgroup Manager, select a user, user group, computer, or computer group.  Click preferences in the top menu bar, and then select the Details tab.  If Google Chrome does not show up in the list, click the plus icon, and open the Google Chrome application.  Now edit the preferences for Google Chrome.  Add a new key to "Always".  For the name, choose "Extension IDs and update URLs to be silently installed".  Now, create a key inside of this key, and set the value to the following value:

Change into Chrome's managed policies directory (Create this directory if it doesn't exist):

Paste the following code into the file:

{

    "ExtensionInstallForcelist":
        ["ncdhhpnnlcolipdajmnbflchbkhihmjp;https://clients2.google.com/service/update2/crx"]

}

For a more detailed tutorial on setting up policies in Chrome on Linux, see here.