Add data usage tracking for GAIA auth api and GCM engine service

components/data_use_measurement/core/data_use_user_data.h

Index: components/data_use_measurement/core/data_use_user_data.h
diff --git a/components/data_use_measurement/core/data_use_user_data.h b/components/data_use_measurement/core/data_use_user_data.h
index 98fee5fd63c19e43b5f4e8dfee904798fc7e12ca..07a55837c65828f011d06d2e993b28a05ab6dc1c 100644
--- a/components/data_use_measurement/core/data_use_user_data.h
+++ b/components/data_use_measurement/core/data_use_user_data.h
@@ -47,6 +47,8 @@ class DataUseUserData : public base::SupportsUserData::Data {
     FEEDBACK_UPLOADER,
     TRACING_UPLOADER,
     DOM_DISTILLER,
+    GAIA_AUTH_FETCHER,
+    GCM_ENGINE,
   };
 
   // The state of the application. Only available on Android and on other