Add Google Oauth2 scopes for Doubleclick for Publishers (DFP)

Author: frankkessler

src/OAuth/OAuth2/Service/Google.php

@@ -52,6 +52,11 @@ class Google extends AbstractService
     const SCOPE_ADWORDS                     = 'https://www.googleapis.com/auth/adwords/';
     const SCOPE_GAN                         = 'https://www.googleapis.com/auth/gan'; // google affiliate network...?
 
+    //Doubleclick for Publishers
+    const SCOPE_DFP                         = 'https://www.googleapis.com/auth/dfp';
+    const SCOPE_DFP_TRAFFICKING             = 'https://www.googleapis.com/auth/dfatrafficking';
+    const SCOPE_DFP_REPORTING               = 'https://www.googleapis.com/auth/dfareporting';
+
     // Google Analytics
     const SCOPE_ANALYTICS                   = 'https://www.googleapis.com/auth/analytics';
     const SCOPE_ANALYTICS_EDIT              = 'https://www.googleapis.com/auth/analytics.edit';