Follow these steps to deploy:

1.    On a domain controller open group policy editor and create a policy for Adblock deployment and assign to the OU that contains the computers you wish to deploy to. 
2.    Edit the policy, and install the chrome Group Policy template here: http://dl.google.com/dl/edgedl/chrome/policy/policy_templates.zip template file (Right click administrative templates select Add/Remove templates). You need only do this to 1 domain controller. This will provide new Chrome specific GPO settings
2.    Enable "Configure User Group policy loopback processing mode:" under Computer Configuration - Policies - Administrative Templates - System - Group Policy. Set mode to merge
3.    Under “User Configuration – Policies – Administrative Templates – Classic Administrative Templates - Google – Google Chrome – Extensions” enable policy “Configure the list of force-installed extensions”. Under options, click show. Enter the value: cfhdojbkjhnklbpkdaibdccddilifddb;https://clients2.google.com/service/update2/crx
4.    Click OK.
5. This will disable first run page for Chrome users. Under Computer Configuration - Preferences - Windows Settings - Registry, create new registry item with action "update". Set values as follows:
-Hive: HKEY_Local_Machine
-Key Path: Software\Policies\Google\Chrome\3rdparty\extensions\cfhdojbkjhnklbpkdaibdccddilifddb\policy
-Value Name: suppress_first_run_page
-Value Type: REG_DWORD
-Value Data: 1