Add data usage tracking for GAIA auth api

components/data_use_measurement/core/data_use_measurement.cc

Index: components/data_use_measurement/core/data_use_measurement.cc
diff --git a/components/data_use_measurement/core/data_use_measurement.cc b/components/data_use_measurement/core/data_use_measurement.cc
index c7f1f69579d3d9dd0bb00fac9253247e6867cf74..1fdd19512efb6b86f11c71a4371c5b496d96787d 100644
--- a/components/data_use_measurement/core/data_use_measurement.cc
+++ b/components/data_use_measurement/core/data_use_measurement.cc
@@ -11,6 +11,7 @@
 #include "components/data_use_measurement/core/data_use_user_data.h"
 #include "components/data_use_measurement/core/url_request_classifier.h"
 #include "components/domain_reliability/uploader.h"
+#include "google_apis/gaia/gaia_auth_util.h"
 #include "net/base/network_change_notifier.h"
 #include "net/base/upload_data_stream.h"
 #include "net/http/http_response_headers.h"
@@ -99,6 +100,8 @@ void DataUseMeasurement::OnBeforeURLRequest(net::URLRequest* request) {
       // DataUseUserData::AttachToFetcher() cannot be called from domain
       // reliability, since it sets userdata on URLFetcher for its purposes.
       service_name = DataUseUserData::ServiceName::NOT_TAGGED;
+    } else if (gaia::RequestOriginatedFromGaia(*request)) {
+      service_name = DataUseUserData::ServiceName::NOT_TAGGED;
     }
 
     data_use_user_data = new DataUseUserData(service_name, CurrentAppState());