Network traffic annotation added to OAuth2ApiCallFlow and its subclasses.

google_apis/gaia/oauth2_api_call_flow.cc

Index: google_apis/gaia/oauth2_api_call_flow.cc
diff --git a/google_apis/gaia/oauth2_api_call_flow.cc b/google_apis/gaia/oauth2_api_call_flow.cc
index e3d40f0e037e9c2a2164e764cb04bb56d758effe..3292888b0b292119428f328675694e812e3709c9 100644
--- a/google_apis/gaia/oauth2_api_call_flow.cc
+++ b/google_apis/gaia/oauth2_api_call_flow.cc
@@ -79,8 +79,14 @@ std::unique_ptr<URLFetcher> OAuth2ApiCallFlow::CreateURLFetcher(
     const std::string& access_token) {
   std::string body = CreateApiCallBody();
   net::URLFetcher::RequestType request_type = GetRequestTypeForBody(body);
-  std::unique_ptr<URLFetcher> result =
-      net::URLFetcher::Create(0, CreateApiCallUrl(), request_type, this);
+  net::NetworkTrafficAnnotationTag traffic_annotation =
+      CompleteNetworkTrafficAnnotation("oauth2_api_call_flow",
+                                       GetNetworkTrafficAnnotationTag(), R"(
+          policy {
+            cookies_allowed: false
+          })");
+  std::unique_ptr<URLFetcher> result = net::URLFetcher::Create(
+      0, CreateApiCallUrl(), request_type, this, traffic_annotation);
 
   gaia::MarkURLFetcherAsGaia(result.get());
   result->SetRequestContext(context);