Below is the Google OAuth Scope list. Scope is required when you are making OAuth Request.
OAuth Request of Google Cloud Messging
OAuth request for Google Cloud Messaging: https://accounts.google.com/o/oauth2/auth?response_type=code&client_id=150002918248.apps.googleusercontent.com&redirect_uri=https://hayageek.com/examples/google-chrome-gcm/oauth.php&scope=https://www.googleapis.com/auth/gcm_for_chrome&access_type=offline
OAuth request for Youtube:https://accounts.google.com/o/oauth2/auth?response_type=code&client_id=150002918248.apps.googleusercontent.com&redirect_uri=https://hayageek.com/examples/google-chrome-gcm/oauth.php&scope=https://gdata.youtube.com&access_type=offline
| Google Service | Scope |
| Google Analytics | https://www.google.com/analytics/feeds/ |
| Google App state | https://www.googleapis.com/auth/appstate |
| Google Base | https://www.google.com/base/feeds/ |
| Goolge Buzz | https://www.googleapis.com/auth/buzz |
| Google Books | https://www.google.com/books/feeds/ |
| Blogger | https://www.blogger.com/feeds/ |
| Google Calendar | https://www.google.com/calendar/feeds/ |
| Google Games | https://www.googleapis.com/auth/games |
| Google Cloud Messaging for Android | https://android.apis.google.com/c2dm |
| Google Cloud Messaging for Browser | https://www.googleapis.com/auth/gcm_for_chrome |
| Google Contacts | https://www.google.com/m8/feeds/ |
| Google Drive | https://www.googleapis.com/auth/drive |
| Google Drive Files | https://www.googleapis.com/auth/drive.file |
| Chrome Web store | https://www.googleapis.com/auth/chromewebstore.readonly |
| Google Docs | https://docs.google.com/feeds/ |
| Google Finance | https://finance.google.com/finance/feeds/ |
| Gmail | https://mail.google.com/mail/feed/atom |
| Google Health | https://www.google.com/health/feeds/ |
| Google H9 | https://www.google.com/h9/feeds/ |
| Google Maps | https://maps.google.com/maps/feeds/ |
| Moderator | https://www.googleapis.com/auth/moderator |
| Open Social | https://www-opensocial.googleusercontent.com/api/people/ |
| Orkut Rest API | https://www.googleapis.com/auth/orkut |
| Orkut | https://orkut.gmodules.com/social/rest |
| Picassa Web | https://picasaweb.google.com/data/ |
| Google + login | https://www.googleapis.com/auth/plus.login |
| Google + | https://www.googleapis.com/auth/plus.me |
| Side Wiki | https://www.google.com/sidewiki/feeds/ |
| Google Sites | https://sites.google.com/feeds/ |
| Google Spreadsheets | https://spreadsheets.google.com/feeds/ |
| Google Tasks | https://www.googleapis.com/auth/tasks |
| Google URL Shortener | https://www.googleapis.com/auth/urlshortener |
| Google Wave | http://wave.googleusercontent.com/api/rpc |
| Google Webmaster Tools | https://www.google.com/webmasters/tools/feeds/ |
| User Info (Email) | https://www.googleapis.com/auth/userinfo.email |
| User Info (Profile) | https://www.googleapis.com/auth/userinfo.email |
| Youtube | https://gdata.youtube.com |
