New Profile metric for Auth Errors.

components/signin/core/browser/signin_metrics.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/signin/core/browser/signin_metrics.h"
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/user_metrics.h"
 #include "base/time/time.h"
@@ skipping 79 matching lines @@
     UMA_HISTOGRAM_TIMES(
         "Signin.Reconciler.ExternalCcResultTime.Completed",
         time_to_check_connections);
   } else {
     UMA_HISTOGRAM_TIMES(
         "Signin.Reconciler.ExternalCcResultTime.NotCompleted",
         time_to_check_connections);
   }
 }
 
+void LogAuthError(GoogleServiceAuthError::State auth_error) {
+  UMA_HISTOGRAM_ENUMERATION("Signin.AuthError", auth_error,
+      GoogleServiceAuthError::State::NUM_STATES);
+}
+
 }  // namespace signin_metrics