Network traffic annotation added to gaia_auth_fetcher.

ios/chrome/browser/signin/gaia_auth_fetcher_ios.mm

Index: ios/chrome/browser/signin/gaia_auth_fetcher_ios.mm
diff --git a/ios/chrome/browser/signin/gaia_auth_fetcher_ios.mm b/ios/chrome/browser/signin/gaia_auth_fetcher_ios.mm
index 435743988eb94dc33bb71cf784c1e6879059ef53..4eb5741beb46ae0bcc56569e612531ecf03678f1 100644
--- a/ios/chrome/browser/signin/gaia_auth_fetcher_ios.mm
+++ b/ios/chrome/browser/signin/gaia_auth_fetcher_ios.mm
@@ -329,17 +329,19 @@ GaiaAuthFetcherIOS::GaiaAuthFetcherIOS(GaiaAuthConsumer* consumer,
 GaiaAuthFetcherIOS::~GaiaAuthFetcherIOS() {
 }
 
-void GaiaAuthFetcherIOS::CreateAndStartGaiaFetcher(const std::string& body,
-                                                   const std::string& headers,
-                                                   const GURL& gaia_gurl,
-                                                   int load_flags) {
+void GaiaAuthFetcherIOS::CreateAndStartGaiaFetcher(
+    const std::string& body,
+    const std::string& headers,
+    const GURL& gaia_gurl,
+    int load_flags,
+    const net::NetworkTrafficAnnotationTag& traffic_annotation) {
   DCHECK(!HasPendingFetch()) << "Tried to fetch two things at once!";
 
   bool cookies_required = !(load_flags & (net::LOAD_DO_NOT_SEND_COOKIES |
                                           net::LOAD_DO_NOT_SAVE_COOKIES));
   if (!ShouldUseGaiaAuthFetcherIOS() || !cookies_required) {
     GaiaAuthFetcher::CreateAndStartGaiaFetcher(body, headers, gaia_gurl,
-                                               load_flags);
+                                               load_flags, traffic_annotation);
     return;
   }